random

4,702 results, page 28
  1. Statistics

    Safety researchers, interested in determining whether the occupancy of a vehicle might be related to the speed at which the vehicle is driven, have observed the following speed (mph) measurements for two random samples of vehicles. Alone With Pass 64 44 50

    asked by Jo on October 4, 2009
  2. Statistics

    The national centre of health statistics reports that the mean systolic blood pressure for males 35-44 years of age is 128 and a standard deviation of 15. A group of 50 executives selected at random are tested and found to have an avarage of 132.3. Is

    asked by Sue on April 16, 2013
  3. political science

    During the 2nd Party System in American politics, parties moved from a ______ in Congress to a _______ in order to pick candidates and develop a party platform. caucus; national convention informal poll; direct primary caucus; direct primary random

    asked by ryan on April 10, 2016
  4. Statistics

    The heights of women in a certain population have a Normal distribution with mean 64 inches and standard deviation 3.5 inches. We select three women at random from this population. Assume that their heights are independent. Find the probability that the

    asked by Sarah on November 20, 2016
  5. math

    Riena has six unmarked CDs in a box, where each is dedicated to exactly one of English, mathematics, French, American history, chemistry, and computer science. Answer the following questions: a. If she chooses a CD at random, what is the probability she

    asked by kirk on August 12, 2010
  6. statistics

    The amount of time spent by North American adults watching television per day is normally distributed with a mean of 6 hours and a standard deviation of 1.5 hours. What is the probability that in a random sample of five North American adult at least two of

    asked by Anonymous on November 16, 2010
  7. Pre-calculus

    A set of data is normally distributed with a mean of 500 and standard deviation of 40. a). What percent of the data is between 460 and 540? P(460

    asked by Mary on January 16, 2009
  8. Binomial Math

    The manager of Toy World has decided to accept a shipment of electronic games if there is no more than 1 defective electronic game in a random sample of size 17. What is the probability that he will accept the shipment if 15% of the electronic games is

    asked by Bersy on January 27, 2013
  9. Probability

    If a women with a BMI below 25 are considered to be normal weight, how many of these women would be classified as overweight? If you choose a woman at random, what is the probability that she will be overweight. Chart below BMI Frequency 15.0-19.9 9

    asked by bria on July 12, 2012
  10. Stats

    A car insurance company has determined that 7% of all drivers were involved in a car accident last year. The company randomly selects 200 drivers. Compute the mean and standard devistion of the random variable, x, the number of drivers involved in

    asked by Christine on November 5, 2010
  11. math

    The sample mean to be calculated from a random sample of size n= 4 from a population consistsof eight measurements (2, 6, 9, 12, 25, 29, 39, 50) . find the sampling distribution of y y .(hint : there are 70 samplesof size 4 when sampling from a population

    asked by heba on November 13, 2010
  12. Statistics

    among customers- 70% buy popcorn, 40% buy ice cream, and 25% by both. Suppose you pick one customer at random. Find the probability the customer buys popcorn or ice cream.

    asked by Jasmine on June 15, 2012
  13. statistics

    Suppose that 65% of all California State students own a motorcycle. A random sample of 100 CS students is surveyed and 61% indicate that they own a motorcycle. a. What is the value of the population percent given to you in the problem? b. What is the value

    asked by Rochelle on June 14, 2012
  14. Statistics

    It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs

    asked by Amber on November 11, 2014
  15. statistics

    The sample mean to be calculated from a random sample of size n= 4 from a population consists of eight measurements (2, 6, 9, 12, 25, 29, 39, 50) . find the sampling distribution of y .(Hint : there are 70 samples of size 4 when sampling from a population

    asked by koky on November 14, 2010
  16. Stats (probability)

    Of 10 girls in a class, 3 have blue eyes. If two girls are chosen at random, what is the probability that (i) both have blue eyes, (ii) neither has blue eyes, (iii) at least one has blue eyes? I have the answers but do not know how to get them. I'm trying

    asked by Morgan on March 16, 2011
  17. statistics

    Suppose that 65% of all California State students own a motorcycle. A random sample of 100 CS students is surveyed and 61% indicate that they own a motorcycle. a. What is the value of the population percent given to you in the problem? b. What is the value

    asked by Rochelle on June 14, 2012
  18. statistics

    The average temperature in households is 67.6 degrees F. The standard deviation is 4.2 degrees F. A random sample of 51 households is to be selected What is the probability that the average of this sample will be within 1.4 STANDARD ERRORS of the

    asked by Kristin on September 28, 2012
  19. science

    Which of the following is NOT true about compounds? A) compounds join in specific ratios according to their masses B) the mass ratio of a specific compound is always the same C) compounds are random combinations of elements D) different mass ratio mean

    asked by Katherine on November 13, 2009
  20. Math check

    Consider the binomial random variable x with n = 30 and p = 0.85. (a) Find the mean. (Give your answer correct to one decimal place.) 25.5 . (b) Find the standard deviation. (Give your answer correct to two decimal places.) 30.85

    asked by Nora 511 on June 6, 2013
  21. math

    A basket at a baby shower contains 8 bottles of pink nail polish numbered 1 through 8, and 9 bottles of red nail polish numbered 1 through 9. One bottle is drawn from the basket at random.

    asked by Anonymous on December 17, 2016
  22. communication

    Let X,Y be discrete random variables related as Y=g(X), where g is a deterministic function. The ordering of their entropies satisfies H(X)≤H(Y), equality holds if g is a one to one mapping H(X)≥H(Y), equality holds if g is a one to one mapping

    asked by digital communication on August 8, 2018
  23. maths

    A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

    asked by stranger on April 1, 2013
  24. statistics

    The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of

    asked by Laynette on September 3, 2011
  25. Econ

    The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test

    asked by alex on April 22, 2014
  26. statistics

    A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We

    asked by Lee on April 15, 2014
  27. statistics

    A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We

    asked by Lee on April 16, 2014
  28. statistics

    The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test

    asked by Anonymous on April 22, 2014
  29. Probabilities

    A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

    asked by Anna on April 1, 2013
  30. maths

    A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

    asked by stranger on April 2, 2013
  31. statistics

    The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of

    asked by Valerie on November 3, 2010
  32. College Math

    Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, four green ones, five white ones, and one purple one. She grabs seven of them. Find the probability of the following event, expressing it as a

    asked by Anonymous on November 21, 2016
  33. government

    the best example of the use of random sampling to determine who will be elected as your school president would involve a. asking each student in your class whom he or she would vote for b. asking one student in each classroom whom he or she would vote for

    asked by jere on December 27, 2007
  34. math finite

    Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2

    asked by victoria on February 21, 2012
  35. math

    on the assumption that IQ's are normally distribited in the population with a mean of 100 and a standard deviation of 20 findbthe proportion of peoples IQ's. what is the probability that a score picked at random will lie above score of 135, lie below score

    asked by quennie on November 22, 2016
  36. Math

    The diameters of grapefruits in a certain orchard are normally distributed with a mean of 5.52 inches and a standard deviation of 0.46 inches (A) What percentage of the grapefruits in this orchard is larger than 5.45 inches? (B) A random sample of 100

    asked by Michael on October 29, 2012
  37. stats

    The life of tires manufactured by Omega Tires Inc is believed to be normally distributed with a mean of 110,000 km and a standard deviation of 5,000 km. A random sample of 200 tires is tested . What is the problability of the mean life of this sample being

    asked by Carlos on October 9, 2012
  38. statistics

    A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable. & For the

    asked by sharon on December 26, 2017
  39. Discrete Math

    You have two decks of 26 cards. Each card in each of the two decks has a different letter of the alphabet on it. You pick at random one card from each of the two decks. A vowel is worth 3 points and a consonant is worth 0 points. Let X = the sum of the

    asked by Martin on November 15, 2011
  40. statistics

    A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We

    asked by Lee on April 15, 2014
  41. statistics

    A new treatment for AIDS is to be tested in a small clinical trial on 15 patients.The proportion p^ who respond to the treatment will be used as an estimate of the proportion p of (potential)responders in the entire population of AIDS patients. If in fact

    asked by todd on February 16, 2008
  42. math

    A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 14 characters long, and that each character is either a lowercase letter, (a, b, c, etc), an uppercase letter (A, B, C, etc) or a numerical digit (0, 1, 2, 3,

    asked by john on November 9, 2015
  43. Business Statistics

    The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The manufacturer's specifications are that the standard deviations is 100 hours. A random sample of 64 light bulbs indicated a sample

    asked by Tim on September 21, 2015
  44. math

    A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 14 characters long, and that each character is either a lowercase letter, (a, b, c, etc), an uppercase letter (A, B, C, etc) or a numerical digit (0, 1, 2, 3,

    asked by john on November 8, 2015
  45. STATISTICS

    Here is the problem: (A) Select a random sample of 30 student from our population (we have a data entry to get the sample from). At the 0.05 level of significance is there evidence that the average travel time is greater than 45 minutes? (B) What

    asked by Irina on December 16, 2007
  46. Statistics

    Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the

    asked by Abbey on February 27, 2015
  47. statistics

    Fewer young people are driving. In 1983, 87 percent of 19 year-olds had a driver's license. Twenty-five years later that percentage had dropped to 75 percent (University of Michigan Transportation Research Institute website, April 7, 2012). Suppose these

    asked by soni on March 1, 2015
  48. Math

    Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?

    asked by Jane on February 27, 2012
  49. math

    which of the following is true of a random sample 1. its the only way to sample a population 2. each member of the sample is a volunteer 3. it is always the easiest way o sample a population 4. Each member of the population has an equal chance of being

    asked by Freaky friday on a monday on April 16, 2018
  50. math

    A bag contains 11 red balls, 9 blue balls and x yellow balls. The probabilty of choosing a yellow ball at random is 1/6. What is the probability of not getting a blue ball.

    asked by danial on November 19, 2013
  51. probability statistics

    A jar contains 6 red, 7 white, and 7 blue marbles. If a marble chosen at random. Find the following probabilities? A)P(red) B)P(white) C)P(red or blue) D)P(red and white)

    asked by charles on August 10, 2016
  52. Math

    A bag contains the two tiles shown. One tile is drawn at random from the bag. The tile is returned to the bag and again a tile is drawn from the bag. What is the sample space for this experiment? A. {L, M} B. {LL, LM, MM} C. {LL, LM, ML, MM} D. {L}

    asked by KD on June 2, 2014
  53. math

    There are 3 red marbles, 3 blue marbles, and 1 green marble in a bag. A marble is drawn at random from the bag and not replaced. Then a second marble is drawn. What are all the possible outcomes?

    asked by Holden on March 4, 2011
  54. Math

    there are 3 red marbles , 3 blue marbles and 1 green marble in a bag. A marble is drawn at random from the bag and not replaced. Then a second marble is drawn. What are all the possible outcomes?

    asked by Help on March 4, 2011
  55. Chemistry help

    Hey...I just want to make sure my answers to these questions are correct... 1. d=2.507 g/1.22 mL = 2.054918033 g mL^-1 explain how both the rules for significant figures and the random error calculation (p(d) = +-0.34 g mL^-1) indicate that the digits

    asked by Bryant on January 24, 2007
  56. college math

    Select Two Cards In a board game uses the deck of 20 cards shown. first roll has five birds 2 yellow, 3 red, second roll 5 lions same, third roll five frogs the same, fourth roll has five monkeys the same. Two cards are selected at random from this deck.

    asked by kim on January 18, 2012
  57. Statistics

    A hospital claims that the mean waiting time at its emergency room is 25 minutes. A random sample of 16 patients produced a mean wait time of 27.5 minutes with a standard deviation of 4.8 minutes. Use the 1% level of significance to test is the wait time

    asked by Steven on March 28, 2013
  58. math

    B) A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4Kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all mid-sized cars have a normal

    asked by joe on September 27, 2016
  59. Math

    What price do farmers get for the peach crops? in the third week of June, a random sample of 40 farming regions gave a sample mean of $6.88 per basket. assume that the standard deviation is known to be $1.92 per basket. find a 90% confidence interval for

    asked by Justina on August 8, 2011
  60. stat

    the process that produces sonora bars a type of candy is intended to pduce bars with a mean weight of 56 gm. The process standard deviation is known to be 0.77gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Test to see wheather the

    asked by christopher on December 11, 2012
  61. statistics

    A shipment of 50 parts contains 12 defective parts. Suppose 3 parts are selected at random, without replacement, from the shipment. What is the probability that all 3 parts are defective?

    asked by blah on December 14, 2015
  62. statistics

    a bag contains 10 red balls and 7 blue balls.a ball is drawn at random.the probability that ball drawn is red is

    asked by ahsan on October 12, 2015
  63. statistics

    Consider a random sample of 37 students, and consider the number who graduate in six years. . Find the probability that 20 students in the sample graduate in six years

    asked by Jack on March 20, 2012
  64. Math-Probability

    An urn contains four red balls and three white balls. A sample of 2 balls is selected at random from the urn. What is the probability that at least one of the balls is red?

    asked by Emma on March 17, 2012
  65. statistics help please :(

    A shipment of 50 parts contains 11 defective parts. Suppose 3 parts are selected at random, without replacement, from the shipment. What is the probability that exactly 2 parts are not defective?

    asked by Izabella on December 15, 2015
  66. Finite Math

    An urn contains six red balls and five white balls. A sample of 2 balls is selected at random from the urn. What is the probability that at least one of the balls is red?

    asked by Amanda on March 15, 2012
  67. math

    A bag contains 12 red balls and 10 blue balls. A ball is drawn at random. The probability that ball drawn is red is

    asked by fitsum on November 1, 2017
  68. probability

    a bag contains 7 red balls, 4 green balls and 5 yellow balls. what is the probability that 3 balls drawn at random are either green or yellow?

    asked by anuj on March 14, 2012
  69. math

    In a random sample of 80 ears of corn, farmer Carl finds that 11 of them have worms. Carl claims that less than 20% of all his corn has worms. Test this claim at the 0.05 significance level. (a) What is the test statistic? zp̂ = (b) What is the P-value of

    asked by Kyle on November 21, 2017
  70. math

    A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? I have seen so many different answers on this site to this question and am not sure. I

    asked by m on November 27, 2010
  71. math

    Suppose that the population of a certain townis made up of 45% of men and 55% of women. Of the men, 40% wear glasses, abd of the women, 20% wear glasses. Given that a person chosen at random from the town wears glasses, what is the probability that the

    asked by Anonymous on April 13, 2011
  72. sssc

    Suppose we test H0 : p = .3 versus Ha : p ≠ .3 and that a random sample of n = 100 gives a sample proportion p = .20. a: Test H0 versus Ha at the .01 level of significance by using critical values. What do you conclude? b: Find the p-value for this test.

    asked by Anonymous on June 11, 2012
  73. Statistics

    From random sample of 200 college students, 40 students indicated that they smoke cigarettes. Use the information from the sample to calculate a 95% confidence interval for the population proportion of college students that smoke cigarettes (round to

    asked by Mary on May 18, 2012
  74. Statistics

    If someone will explain how to work these problems out, that'll help me a ton! A weight loss program claims their patients loose an average of 3 pounds during the first month of the program but a consumer group believes the number is higher than that. A

    asked by lviiii on May 10, 2016
  75. Stats (Math)

    Assume that Science scores on a 25-point quiz for a random sample of 5 students were drawn from a normal population. The assumed variance was 20 while the recorded variances were: 18, 16, 10, 13, and 23. You suspected that the variance is actually higher.

    asked by Leeroy on May 10, 2015
  76. Statistics / Math

    If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places. non regular heavy total man 135 64 5 204 women 187 21 9 217 total 322 85 14 421 Answer in decimal (round to

    asked by Sam on February 26, 2008
  77. statistics

    A random sample of 31 people employed by the Florida state authority established they earned an average wage (including benefits) of $56 per hour. The sample standard deviation was $6.35 per hour. Develop a 99 percent confidence interval for the population

    asked by tina on March 8, 2012
  78. statistics

    The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are $45,000, $50,000, and $40,000. Find a point estimate of the population mean of the starting

    asked by Quintunya on March 16, 2013
  79. maths

    Suppose there are 10 coins laid out in front of you. All of the coins are fair (i.e. have an equal chance of heads or tails) except one, which flips to heads every time. You draw one coin at random and flip it 5 times. If each of the 5 flips results in

    asked by sana on March 26, 2013
  80. science

    Which statement best explains why dating geologic materials from the Quarternary Period uses a different radioactive isotope than for materials from the cambrian Period? a. all rocks contain radioactive substances. b. some isotopes decay faster than

    asked by Angie on April 5, 2009
  81. statistics

    The manager at the YMCA believes members are staying longer at the Y due to what they feel was a very successful marketing plan. Studies show the previous mean time per visit was 36 minutes, with a standard deviation = 11 minutes. A simple random sample of

    asked by Henry on April 18, 2012
  82. statistics and probability

    A shipment of 20 computers contains 4 defective machines.Two computers are selected at random without replacement and tested for being detective. (a). is this a binomial experiment? why or why not solution. Yes. because each trial can result in just two

    asked by masinde on December 3, 2015
  83. Statistical inference

    Suppose the results for stat 201 in 2014 are normally distributed with mean 160 and standard deviation 18 . Find the probability that a random sample of size 36 gives a sample mean value in the following cases Question : between 120 and 220 p(120 < z <

    asked by Manngopo on August 2, 2015
  84. statistics

    Susan is taking Western Civilization this semester on a pass/fail basis. The department teaching the course has a history of passing 77% of the students in Western Civilization each term. Let represent the number of times a student takes Western

    asked by Anonymous on February 28, 2011
  85. Stats

    Suppose that a random sample of adults has a mean score of on a standardized personality test, with a standard deviation of . (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a

    asked by Anonymous on November 19, 2011
  86. mathsssssssssaaaaaaaaaaaaaaaa

    An ant starts a random walk on the real number line at 0. At each step, the ant moves by +1 or −1 with equal probability. After 6 moves, the probability that the ant is on a positive number can be expressed as a/b, where a and b are positive coprime

    asked by shayan on July 18, 2013
  87. statistics

    4.2. A new drug that treats patients with anxiety has a 60% success rate in improving the patient’s condition. For a random sample of eight patients taking this drug, determine the probability that: 4.2.1. Four patients have improvement in their

    asked by shahistha on September 15, 2014
  88. Business statistics

    A new drug that treats patients with anxiety has a 60% success rate in improving the patient’s condition. For a random sample of eight patients taking this drug, determine the probability that: 4.2.1. four patients have improvement in their condition.

    asked by Nthabiseng on September 16, 2014
  89. Strayer University

    An urn contains white balls and red balls. If Juan chooses balls at random from the urn, what is the probability that he will select white balls and red balls? Round your answer to decimal places

    asked by Thomala on June 16, 2014
  90. math

    A bag of marbles contains 8 red marbles and 6 yellow marbles. Two marbles are drawn out of the bag at random without replacement. What is the probability that two red marbles are drawn out? Be sure to represent your answer as a fraction in simplest form.

    asked by jasmine on April 22, 2015
  91. Statistics

    A quality control audit has been devised to check on the sampling procedure when a truckload of potatoes arrive at a packing plant. A random sample of 250 is selected and examined for bruises and other defects. The whole truckload will be rejected if 5% of

    asked by Rue on April 17, 2013
  92. Stastistics

    A quality control audit has been devised to check on the sampling procedure when a truckload of potatoes arrive at a packing plant. A random sample of 250 is selected and examined for bruises and other defects. The whole truckload will be rejected if 5% of

    asked by Sue on April 16, 2013
  93. statistics

    Kindergarten children have heights that are approximately distributed normal. A random sample of size 20 is taken and the mean x and the standard deviation s are calculated ( x = 40 inches and s = 3). a. Is there sufficient evidence to indicate that the

    asked by T on August 3, 2014
  94. Stat

    Kindergarten children have heights that are approximately distributed normal. A random sample of size 20 is taken and the mean x and the standard deviation s are calculated ( x = 40 inches and s = 3). a. Is there sufficient evidence to indicate that the

    asked by MK on August 5, 2014
  95. statistics

    2. The director of admissions at a large university advises students that the cost of textbooks will average more than $300 for a typical semester. A random sample of 80 students enrolled in the university shows a sample mean cost of $315.40 and a sample

    asked by Elizabeth on August 22, 2010
  96. Statistics

    According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was $2.835. AAA noted that the standard deviation of the fuel price was $0.15. A random sample of n=100 gas stations is selected and the mean

    asked by Jerome on June 23, 2013
  97. Probability (Pre-Calculus)

    A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam.

    asked by Hailey on March 26, 2010
  98. Math

    There are 7 rap songs, 7 rock songs and 5 classical songs to select from. Three songs are to be chosento play at random -what is the probability that only classical songs are selected? -what is the expected number of classical songs to be selected?

    asked by Jill on January 25, 2011
  99. Statistic

    A major airline company is concerned that its proportion of late arrivals has substantially increased in the past month. Historical data shows that 18% of the company airplanes have arrived late. In a random sample of 1,240 airplanes, 310 airplanes have

    asked by Rachel on November 18, 2014
  100. PROBABILITY

    A group of 90 students is to be split at random into 3 classes of equal size. All partitions are equally likely. Joe and Jane are members of the 90-student group. Find the probability that Joe and Jane end up in the same class. My idea: the total

    asked by Anonymous on February 19, 2014

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