random

4,702 results, page 2
  1. Math

    A bag contains 3 red, 5 yellow, 2 green and 6 blue marbles. If one marble is chosen at random, replaced, and then a second marble is chosen at random, find the probability of obtaining 2 marbles of different colors.

    asked by Bryan on January 22, 2014
  2. Math probability - HELP

    A bag contains 3 red, 5 yellow, 2 green and 6 blue marbles. If one marble is chosen at random, replaced, and then a second marble is chosen at random, find the probability of obtaining 2 marbles of different colors.

    asked by Bryan on January 23, 2014
  3. Probability, Random Variables, and Random Process

    A zero-mean Gaussian random process has an auto-correlation function R_XX (τ)={■(13[1-(|τ|⁄6)] |τ|≤6@0 elsewhere)┤ Find the covariance function necessary to specify the joint density of random variables defined at times t_i=2(i-1),i=1,2,…,5.

    asked by Rakesh on November 2, 2017
  4. Probability

    Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the form fX(x)=⎧⎩⎨cx3,0,if x≥1,otherwise. Let U be a uniform random variable on [0,2]. Assume that X and U are independent. What is the value of the constant c? c= -

    asked by qwerty on April 21, 2015
  5. mathmath

    A study conducted by the Metro Housing Agency in a midwestern city revealed the information below concerning the age distribution of renters in the city. (Round your answers to four decimal places.) Age Adult Population, % Group Who Are Renters, % 21-44 53

    asked by jack on October 16, 2010
  6. algebra 1

    Circle the most appropriate description. 27.A city planning commitee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Random Sample,systematic sample,self-selected sample, convenience sample, bipartisan

    asked by janet on May 20, 2013
  7. maths

    A random number generator draws at random with replacement from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Find the chance that the digit 5 appears on more than 11% of the draws, if a) 100 draws are made b) 1000 draws are made

    asked by anonymous on April 27, 2013
  8. Statistics

    Suppose x has a distributionwith u=72 and 0=8 if random samples of size n=16 are selected, can we say anything about the x distributin of sample means if the originalx distribution is normal can we say anything about the x distribution of random samples of

    asked by John on June 14, 2010
  9. Probability

    Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and variance r. The random variables Xi are independent and identically distributed with mean b and variance s, and the random

    asked by qwerty on April 21, 2015
  10. statistics

    In a certain region, the mean annual salary for plumbers is $51,000. Let x be a random variable that represents a plumber's salary. Assume the standard deviation is $1300. If a random sample of 100 plumbers is selected, what is the probability that the

    asked by katie on February 25, 2013
  11. statistics

    assume you have a data set from a normally distributed random variable. answer the following: will the random variable be discrete, continuous, or neither? How do you know? I believe its continuous but cant explain why will the data be qualitative or

    asked by Dean on June 29, 2013
  12. STATISTICS

    Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation of 2.25 is this correct

    asked by John on June 10, 2010
  13. Probability

    Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and variance r. The random variables Xi are independent and identically distributed with mean b and variance s, and the random

    asked by A on April 20, 2014
  14. math

    Suppose from a population of 50 bank accounts we want to take a random sample of three accounts in order to learn about the population. How many different random samples of three accounts are possible.

    asked by John on October 15, 2010
  15. Math

    What is the probability that the random variable has a value between 0.1 and 0.5? The random variable is .125.

    asked by Lyndse on March 8, 2010
  16. algebra

    A bag contains 9 marbles: 2 are green, 4 are red, and 3 are blue. Laura chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction

    asked by denora on November 29, 2015
  17. Math, Please Help!

    Suppose a dot is placed at random in a 10 x 10 graph grid in which squares have been numbered from 1 to 100 with no number repeated. Now simulate choosing 100 numbers at random between 1 and 100 inclusive. How many numbers might you expect to match the

    asked by Ashley on November 12, 2014
  18. math

    a basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany pricks a fruit at random. What is the probability that Jameson gets a banana and

    asked by help please on May 7, 2014
  19. Math

    In each case, determine whether the situation calls for a discrete or continuous random variable and explain your answer. Please help! a. The description of the number of children in a family selected at random from families in Ft. Wayne, Indiana b. The

    asked by Jennifer on January 14, 2010
  20. MATH-157

    In each case, determine whether the situation calls for a discrete or continuous random variable and explain your answer. a. The description of the number of children in a family selected at random from families in Ft. Wayne, Indiana b. The net worth of an

    asked by Tyga on April 1, 2010
  21. probability

    Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and variance r. The random variables Xi are independent and identically distributed with mean b and variance s, and the random

    asked by juanpro on April 22, 2014
  22. Math

    Need help on if the sample given is random or not random. The first 50 nurses at a nursing convention write their names on slips of paper and place them in a drawing box. After the box is shaken, 20 names are pulled from the box and each person chosen

    asked by Brandi on August 29, 2013
  23. math

    Let X1,X2,…,X25 be random sample ~ normal(0,16) and Y1, Y2,…,Y25 be random sample ~ normal(1,9), assume the two samples are independent ,comput P(X>Y) where X=Sum(Xi)/25 and Y=Sum(Yi)/25

    asked by assma on December 19, 2014
  24. Mathematics

    The blood types B- and AB- are the rarest of the eight huan blood types representing 1.5% and .6% respectively. a) If the blood types of a random sample of 1000 blood donors are recorded, what is the probability that 10 or more will be AB-? b) If the blood

    asked by Jen on October 3, 2007
  25. Experiment

    The question is how do I design a basic experiment that would allow us to establish a cause-effect relationship between number of hours worked per week and lower college graduation rates? It must have these components: a manupulated independent variable, a

    asked by Ann on June 14, 2011
  26. Maths

    1)A two-figure number is written down at random. Find the probability that a)the number is greater than 44 b)the number is less than 100 2)A letter is picked at random from the english alphabet. Find the probability that a)the letter is a vowel (my

    asked by Anonymous on January 28, 2008
  27. statistics

    A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample of 150 adults is obtained. A.) Describe the sampling distribtuion of p, the sample proportion of adults whose favorite ice cream

    asked by Megan on November 11, 2011
  28. Math

    You want to find out what the favorite hot lunch in the school cafeteria is among the high school students. At an assembly for the whole school, you decide to survey all students who are sitting on the end of their rows in the auditorium. What type of

    asked by Steve on April 26, 2015
  29. english

    A way to decrease your chance of becoming a victim of random violence. Violence is typically not random. Victims are picked out because of certain characteristics — especially vulnerability and availability. If you know of particular places that tend to

    asked by Anonymous on December 1, 2006
  30. ap statistics

    An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial

    asked by nicole on April 24, 2014
  31. ap statistics

    An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial

    asked by nicole on April 24, 2014
  32. ap statistics

    An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial

    asked by nicole on April 24, 2014
  33. Math

    Suppose one person decides to carry out a random act of kindness for three people on Monday. On Tuesday, that same person is kind to three more people, and the three he/she helped on Monday each help three more individuals. If the same circumstances were

    asked by Andy on January 25, 2017
  34. MATH

    In a drawer Richard has 5 pairs of gloves. Each pair has a different color. On Day 1 Richard selects two individual gloves at random from the 10 gloves in the drawer. On Day 2 Richard selects 2 of the remaining 8 gloves at random and on Day 3 two of the

    asked by FRank on January 20, 2016
  35. Statistics

    Daily water intake (including water used in drinks such as coffee, tea and juice) for Canadian adults follows a normal distribution with mean 1.86 litres and standard deviation 0.29 litres. (a) Can you calculate the probability that the mean daily water

    asked by Mel on November 4, 2014
  36. statistics

    A sixth form class consists of 6 girls and 9 boys. Three students from the class are chosen at random. The number of boys chosen is denoted by the random variable X. Show that a)P(X=0)=120/2730 b)P(X=2)=1296/2730

    asked by Nabiha on December 4, 2011
  37. stat

    7. A researcher selects a random sample. A 90% confidence interval for a population mean  A) is an interval with margin of error ± 90%. B) has the property that if we repeatedly selected our random sample in exactly the same way, each time constructing

    asked by Anonymous on December 5, 2010
  38. math

    i have no clue how to do this problem. any help would be appreciated!! : Three hundred people apply for three jobs. 90 of the applicants are women. (a) If three persons are selected at random, what is the probability that all are women? (Round the answer

    asked by CARMEN on June 23, 2010
  39. math

    A fair coin is flipped independently until the first Heads is observed. Let the random variable K be the number of tosses until the first Heads is observed plus 1. For example, if we see TTTHTH, then K= 5. For k = 1,2,...,K, let Xk be a continuous random

    asked by Var on October 15, 2018
  40. statistics

    Suppose we take a random sample of size n from a normal population with variance, σ2 . It can be shown that (n−1)s2/σ2 has a chi-square distribution with n−1 degrees of freedom, where s is the sample variance. Below is a random sample of size 8 drawn

    asked by sandy on March 18, 2013
  41. Math probability

    I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

    asked by didier on June 12, 2017
  42. Math

    I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

    asked by didier on June 12, 2017
  43. statistics

    1. The on-campus housing costs for a semester at a state university are Normally distributed with a mean of $1553 and a standard deviation of $329. (a) What is the distribution of the mean on-campus housing cost for a semester at this university for a

    asked by Sarah on October 26, 2011
  44. probability

    please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that

    asked by karen on August 11, 2012
  45. math

    A bucket contains 7 red, 3 blue, 2 black and 1 yellow ball of the same size. A random selection of 5 balls is taken from the bucket. find the probability that the random selection will contain atleast 1 red ball?

    asked by Mahalakshmi on August 18, 2011
  46. math

    please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that

    asked by karen on August 11, 2012
  47. Statistics

    Service times for customers at a post office follow some right-skewed distribution with mean 2.91 minutes and standard deviation 1.74 minutes. (a) Can you calculate the probability that the average service time for the next two customers is less than 2.64

    asked by Mel on November 4, 2014
  48. Stat

    Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard deviation of 20. a.

    asked by Jen nugyen on April 21, 2016
  49. Statistical work

    Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard deviation of 20. a.

    asked by Lui on April 21, 2016
  50. Statistics

    2. In 2009 a random sample of 70 unemployed people in Alabama showed an average weekly benefit of $199.65. In Mississippi, for a random sample of 65 the number was $187.93. Assume population standard deviations of $32.48 and $26.15 respectively. a. Using

    asked by Gummy on April 6, 2013
  51. Math

    will someone just double check my answers, please. Identify which types of sampling is used:random,stratified, systematic,convenience. 1. a sample consists of every 20th student who leaves the bookstore. answer:systematic 2. a pollster uses a computer to

    asked by Charlene on April 15, 2010
  52. Algebra 2 Probability

    There are 10 cards. Each card has one number between 1 and 10, so that every number from 1 to 10 appears once. In which distributions does the variable X have a binomial distribution? When a card is chosen at random with replacement six times, X is the

    asked by Johnny on April 17, 2018
  53. Math

    A vendor has 14 hellium ballons for sale: 9 are yellow, 3 are red, and 2 are green. A ballon is selcted at random and sold. If the ballon sold is yellow, what is the probablity that the next ballon selected at random, is also yellow?

    asked by ashely on April 18, 2011
  54. Math Plz Explain

    A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany picks a fruit at random. What is the probability that Jameson gets a banana and

    asked by Gracious Human on May 18, 2016
  55. Math Help please!

    11. A basket contains the following pieces of fruit: three apples to oranges two pairs two bananas and five peaches. Jack pics of fruit at random and does not replace it then, Bethany pics of fruit at random. what is the probability that Jack gets a peach

    asked by Jack on May 9, 2016
  56. statistics

    36 people surveyed at random and learned that 20 people are in favor of a new shopping mall. What is a good estimate that person chosen at random in her town would favor a new shopping mall.

    asked by Jarron on May 18, 2014
  57. harvard

    6. For Design 3, consider the probability of a random individual in South Dorchester being sampled; and the probability of a random individual in Harbor Islands being sampled. These probabilities are approximately the same as the probabilities calculated

    asked by jasonsie on December 8, 2012
  58. Math

    Did I answer this problem right? A bag contains 13 marbles of which 10 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red? 100/169. Thanks.

    asked by B.B. on August 7, 2009
  59. Math

    A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jack picks a fruit at random and does not replace it. Then Bethany picks a fruit at random. What is the probability that Jack gets a peach and Bethany

    asked by Anonymous on March 6, 2014
  60. Math

    A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jack picks a fruit at random and does not replace it. Then Bethany picks a fruit at random. What is the probability that Jack gets a peach and Bethany

    asked by Anonymous on March 6, 2014
  61. math

    A drawer contains 8 brown socks and 4 blue socks. A sock is taken from the drawer at random, its colour is noted and it is then replaced. This procedure perform twice more. If X is the random variable. “the number of brown socks taken “, a) Construct

    asked by I Need Help ASAP on May 8, 2018
  62. Probability

    Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be a noise term, another unknown random variable with mean 3 and variance 5. Assume that Θ and W are independent. We have two

    asked by A on April 20, 2014
  63. statistics

    A random sample of 80 youths and a second random sample of 120 adults showed that 18 of the youths and 10 of the adults had been ticketed for careless driving. Use a 1% level of significance to test the claim that youth have a higher proportion of careless

    asked by Anonymous on March 2, 2012
  64. stastics

    I'm having a hard time with question, can someone help me? A random sample of medical files is used to estimate the proportion p of all people who have blood type B. If you have no preliminary estimate for p, how many medical files should you include in a

    asked by Kim on December 19, 2010
  65. Math

    A basket contains the following pieces of fruit: 3 apples 2 oranges, 2 bannans, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then beth picks a fruit at random. What is the probability that jonas gets a peach and beth gets

    asked by Alexander on April 21, 2014
  66. MATH

    A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then Beth picks a fruit at random. What is the probability that Jonas gets a peach and Beth gets

    asked by . on April 11, 2013
  67. Elementary statistics

    Nine apples, four of which are rotten, are in a refrigerator. Three apples are randomly selected without replacement. Let the random variable x represent the number chosen that are rotten. Construct a table describing the probability distribution, then

    asked by Rose Bud on February 29, 2012
  68. stat

    ** I already finish these questions Can you answer so I can compare my final answers w/ yours.** Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution

    asked by Crystal on April 22, 2016
  69. statistics

    The results of a medical test show that of 66 people selected at random who were given the test, 3 tested positive and 63 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.

    asked by Robert on February 24, 2011
  70. Algebra

    11. A basket contains the following pieces of fruit: three apples to oranges two pairs two bananas and five peaches. Jack pics of fruit at random and does not replace it then, Bethany pics of fruit at random. what is the probability that Jack gets a peach

    asked by Baby_Banana on May 10, 2018
  71. STATISTICS

    In the mass production of bolts it is found that 5% are defective. Bolts selected at random and put into packets of ten. A packet is selected at random. Find the probability that it contains (a) three defective bolts. (b) less than three are defective. Two

    asked by NTEEDZI on November 22, 2016
  72. statistics / probability

    A cooler full of sodas has 12 lemon-lime drinks and 18 gingerales. If one drink is selected at random and then a second drink is selected at random, what are the chances that both sodas will be gingerales?

    asked by john on January 5, 2018
  73. Math

    At your summer with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following Methods is most likely to be random? a)You survey customers at the local shopping mall b)You

    asked by Dope Fresh Nation on May 28, 2014
  74. Probability

    Consider three random variables X, Y, and Z, associated with the same experiment. The random variable X is geometric with parameter p∈(0,1). If X is even, then Y and Z are equal to zero. If X is odd, (Y,Z) is uniformly distributed on the set

    asked by qwerty on March 10, 2015
  75. Probability

    Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0 and variance 1), and let X=3U+4V and Y=U+W. Give a numerical answer for each part below. You may want to refer to the standard

    asked by A on April 20, 2014
  76. math 3

    A bag contains 4 yellow, 2 red, and 6 green marbles. Two marbles are drawn. The first is replaced before the second is drawn. A random variable assigns the number of red marbles to each outcome. Calculate the expected value of the random variable

    asked by Jamar on February 11, 2014
  77. Statistics

    The ratio of brown M&M’s in a bag is stated by the candy company to be 56%. If a random sample of 500 bags is selected, determine the probability that the sample proportion of random bags of M&M’s selected has a percentage of brown between 51% and 59%

    asked by Kim on November 23, 2015
  78. Statistics

    3. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

    asked by Tab on January 26, 2011
  79. math

    let the random variable x denote the number of girls in a five-child family. if the probability of a female birth is .5 find the probability of 0,1,2,3,4, and 5 girls in a five-child family. construct the binomial distribution and draw the histogram

    asked by miranda on April 23, 2009
  80. probability

    There are 100 people in line to board a plane with 100 seats. The first person has lost their boarding pass, so they take a random seat. Everyone that follows takes their assigned seat if it's available, but otherwise takes a random unoccupied seat. What

    asked by unowen on July 15, 2017
  81. math

    2. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

    asked by Tab on January 26, 2011
  82. algebra PLEASE HELP ASAP

    1. A bag contains 9 green marbles and 11 white marbles. You select a marble at random. What are the odds in favor of you picking a green marble? a. 9:20 b. 2:9 c. 11:9 d.9:11 my answer is d? 2. A bag contains 5 green marbles, 8 red marbles, 11 orange

    asked by Anon on May 3, 2016
  83. Math

    A card is taken at random from ordinary pack of cards.It is then replaced. Another card is now taken at random from the pack of cards. Work out the probability of the following. a.both cards are the picture cards(jacks,queens or kings) b.neither of cards

    asked by Damian on September 17, 2017
  84. statistics

    The Better Businesss Bureau reports that they resolve 70% of the consumer complaints they receive. a) if a random sample of 5 consumer complaints is selected, what is the probability that all 5 were resolved? b)if a random sample of 5 consumer complaints

    asked by jimmy on July 22, 2012
  85. Finite

    Assume that the box contains balls numbered from 1 through 28, and that 3 are selected. A random variable X is defined as 1 times the number of odd balls selected, plus 2 times the number of even. How many different values are possible for the random

    asked by Sam on October 9, 2012
  86. statistic

    At a party there are 33 students over age 21 and 22 students under age 21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about attitudes toward alcohol.. You have given every student at the party

    asked by sara on February 27, 2013
  87. Statistics (Verify My Answers)

    If I do a research project and my hypothesis is that attitudes of human services providers towards HIV/AIDS would improve after participation in a program would my sampling method be simple random, stratified or cluster sampling? I think it would be simple

    asked by Linda on December 2, 2009
  88. Statistics

    Let Y be a random number between 0 and 1 generated by an idealized random number generator. Find the following probabilities: A. P (0 less than equal to Y less than equal to .6) =? B. P (.3 less than equal to Y less than equal to .5) =? C. P ( Y less than

    asked by Julia T on May 20, 2010
  89. statistics

    homework due by 8am on 2/26...spent too much time with bad websites....still no answers....need help with simple random sample...Have 460 clients...need SRS of 20 clients for survey...Have a number table to select sample from:13873 81598 95052 90908 73592

    asked by nancy on February 26, 2007
  90. Math Help Please? c: Thank you :3

    At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? A) You survey customers at the local shopping mall. B)

    asked by X3 ISayRawr on April 10, 2014
  91. Stats

    Which of the following are binomial experiments? (more than one is possible) 1.) A store finds that 32% of people who enter the store will make a purchase. During a day, 50 people enter the store. The random variable represents the number of people who

    asked by Semmy on October 13, 2015
  92. prob

    Consider the triangle with vertices (0; 0), (1; 0) and (0; 1). Let Z be a uniform random variable in the interval [0; 1]. Draw a vertical line that intersects the x axis at Z. This line divides the triangle in two pieces. Select a point (X; Y ) uniformly

    asked by hsuan on May 3, 2013
  93. Statistics

    Darned old Foofy! Foofy computes the x̅ (MEAN) from data that her professor says is a random sample from population Q. she correctly computes that this mean has a z-score of +41 on the sampling distribution for population Q. Foofy claims she has proven

    asked by Mari on June 1, 2013
  94. Math

    A drawer is filled with red and blue socks. If the probability of selecting a red sock at random is 2/5 what is the probability that a blue sock will be chosen at random? a)3/5 b)2/5 c)2/3 d)3/2

    asked by Addison White on March 30, 2016
  95. algebra

    Which of the following are examples of inferential statistics? Check all that apply. A.Finding the average (mean) of a set of numbers B.Testing every lightbulb produced by a company to confirm that each one works C.Testing random samples of lightbulbs

    asked by daryl on April 18, 2012
  96. Statistics

    1. In thinking about doing statistical analysis, the sample mean should be interpreted as: A.)a constant value that is equal to the population mean. B.) a constant value that is approximately equal to the population mean. C.) a random variable that is

    asked by Sara on May 3, 2011
  97. Research Methods

    A researcher wants to attain a random sample of young drivers who have received DUIs within the last year. Using the PREP system, he asks all first year students at WLU who have received a DUI to volunteer for the study. Thirty-five students actually admit

    asked by Jill on October 15, 2011
  98. english answer check please, 4 questions

    1. To plan your time for a research project, it is best to (1 point) divide the time spent on each step evenly. keep your deadlines flexible. start at the beginning and plan from there.***** work backward. 2. Which of the following is not a guideline for

    asked by Anonymous on March 15, 2017
  99. statistics

    Professor Smith conducted a class exercise in which students ran a computer program to generate random samples from a population that had a mean of 50 and a standard deviation of 9mm. Each of Smith's students took a random sample of size n and calculated

    asked by lauren on February 16, 2008
  100. probability

    There are 100 people in line to board a plane with 100 seats. The first person has lost his boarding pass, so he takes a random seat. Everyone that follows takes their assigned seat if it's available, but otherwise takes a random unoccupied seat. What is

    asked by unowen on November 23, 2017