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Statistics

Statistics
As N increases, how does the size of SEM change (assuming the s stays the same)?

Statistics
The average U.S. yearly capita consumption of citrus fruit is 26.8 pounds. Suppose that the distribution of fruit amounts consumed is bell shaped with a standard deviation equal to 4.2 pounds. a. What percentage of Americans would you expect to consume more than 31 pounds of ...

statistics
Suppose a multiple choice test has 20 questions with each question having 4 choices, only one of which is correct that is %25. suppose an unprepared student writes the answers, each time randomly picking on the 4 choices. what is the probability that the student will get A) ...

statistics
You have two coins that look identical, but one of them is fair and the other is weighted. The weighted coin has a 3/4 chance of flipping heads and a 1/4 chance of flipping tails. Unfortunately, you've forgotten which coin is which! You decide to keep flipping them together, ...

@Miranda - statistics
Please re-post your edited statistics question.

statistics check my work..thank you
Use “service” to assess if there is any difference in duration of hospital stay based on what type of service medical or surgical the patient received during the 25 days in hospital (Key medical=1, surgical=2) what is the sample size, mean and standard deviation? Duration...

statistics check my work
Use gender to assess if there is any difference in duration of hospital stay based on gender. what is the sample size, mean, standard deviation of the males and females during the 25 days in the hospital (key 1=male, 2= female) Duration ........Gender 5............. 2 10...

statistics check my work thank you
what is the sample size, mean, and standard deviation for patients who were given and NOT given antiobiotics (key 1= yes 2=no) Received Antibio Duration of stay in hosp 2 5 2 10 2 6 2 11 2 5 1 14 1 30 2 11 2 17 2 3 2 9 2 3 1 8 1 8 2 5 2 5 1 7 2 4 1 3 2 7 2 9 1 11 2 11 2 9 2 4...

Statistics
Dear Tutors, I really need your help with two questions that I am trying to grasp. Q1. A company is interested in the fuel consumption of a car model. 100 test drivers are chosen and asked to drive the car for 8 hours. Average fuel consumption of the 100 is 30 mpg with sd 6.2...

Statistics
Local food distributor claims that 18% of all food sold are vegetables. If 112 food items are sold are randomly selected, what is the probability that the proportion of vegetables sold differs from the population proportion by more than 2%? I am trying to plug in the formula ...

statistics and probabilities
You have two coins that look identical, but one of them is fair and the other is weighted. The weighted coin has a 3/4 chance of flipping heads and a 1/4 chance of flipping tails. Unfortunately, you've forgotten which coin is which! You decide to keep flipping them together, ...

Statistics
The heights of American women ages 18 to 29 are normally distributed with a mean of 64.3 inches and a standard deviation of 3.8 inches. An American woman in this age bracket is chosen at random. What is the probability that she is less than 70 inches tall?

STATISTICS
Determine which of the four levels of measurement is most appropriate. Heights of survey respondents.

STATISTICS
A bag contains 5 purple marbles, 7 yellow marbles, and 3 orange marbles. If two marbles are selected from the bag: What is the probability that a yellow then an orange are chosen without replacement.

Stats
In the last Canadian census, 2.6% of all Ontario residents declared themselves to be Ukrainian ethnic origin. In a recent survey of 500 Ontario residents, 3.1% of people declared themselves to be of Ukrainian ethnic origin. Using the statistical meanings of the terms, identify...

Statistics
About 13% of the population is left handed. If two people are randomly selected what is the probability that both are left handed?

Bank statistics
A bank wonders whether omitting the annual credit card fee for customers who charge ar least $3000 in a year will increase the amount charged on its cards. The bank makes this offer to an SRS of 400 of its customers. It then compares how much these customers charge this year ...

statistics
2. In a survey of a large company, 30 percent of all employees are said that they are dissatisfied with their working conditions. Find the probabilities that among 12 randomly selected employee who were surveyed; a) None were dissatisfied with working conditions ( 4 marks) b) ...

Statistics
I have completed 6 questions but after 2 hours still cannot do these 4 questions. Please help 1) Jane is playing a game of Monopoly, if she throws six on her next turn she will land on community chest. If she throws eight she will land on Mayfair with a hotel (owned by another...

math/statistics
Evaluate the quantity. 3 · P(6, 4) · C(8, 5)

math/statistics
From a shipment of 65 transistors, 4 of which are defective, a sample of 6 transistors is selected at random. (a) In how many different ways can the sample be selected? ways (b) How many samples contain exactly 3 defective transistors? 166320 samples (c) How many samples do ...

math/statistics
In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 1/3, and therefore the probability that the Democratic candidate would be elected was 2/3 (the two Independent candidates were given no chance of being ...

math/statistics
In a manufacturing plant, three machines, A, B, and C, produce 37%, 36%, and 27%, respectively, of the total production. The company's quality-control department has determined that 1.5% of the items produced by Machine A, 2% of the items produced by Machine B, and 2.5% of the...

Statistics
The hospital-acquired infection rate (including newborns) is___________ A. 0.03% B. 0.30% C. 3.00% D. 30.00 I believe the formula it was given gave me B. 0.30%

Stats
Wood scientists are interested in replacing solid-wood building material by less expensive products made from wood flakes. Some summary statistics obtained from a study of the relationship between the length (in inches) and the strength (in pounds per square inch) of beams ...

Statistics
Jar A contains 8 red balls and 2 green balls. Jar B contains 6 red balls and 3 green balls. You randomly select one ball from Jar A and, without knowing its color, drop it into Jar B. You then randomly select one ball from Jar B. What is the probability that the ball you ...

STATISTICS
90% CONFIDENCE FOR THE MEAN TIME TO COMPLETE A TEST. POPULATION STANDARD DEVIATION OF 3 HOURS. SAMPLE SIZE IF THE ERROR SHOULD BE LESS THAN A HALF HOUR?

math/statistics
In a survey of 200 employees of a company regarding their 401(k) investments, the following data were obtained. 150 had investments in stock funds. 78 had investments in bond funds. 60 had investments in money market funds. 46 had investments in stock funds and bond funds. 38 ...

math/statistics
In the Numbers Game, a state lottery, four numbers are drawn with replacement from an urn containing balls numbered 0-9, inclusive. Find the probability that a ticket holder has the indicated winning ticket. The first three digits in exact order.

Health Care Statistics
A census is defined as which of the following? A. A collection of data B. A survey conducted with a small group C. A bureau of research specialists D. A count of a particular population B. I did my studying and it sows survey but I am hesitant of the choice since its saying ...

math/statistics
In a survey of 400 individual investors regarding subscriptions to the New York Times (NYT), Wall Street Journal (WSJ), and USA Today (UST), the following data were obtained. 120 subscribe to the NYT. 146 subscribe to the WSJ. 68 subscribe to the UST. 36 subscribe to the NYT ...

Health Care Statistics
A hospital that is allowed to use its beds for either acute care or skilled care is referred to as a _____. A. Swing bed hospital B. Tertiary care hospital C. District hospital D. Long term care hospital E. None of the above, it should be

Health Care Statistics
Computers are great for performing statistical calculations, but they must be programmed accurately to calculate correctly. When is statistical data considered “garbage” and how do you correct it? help?

statistics
A female patient has had her red blood cell count tested on 6 occasions. A mean of 4.4 with sample standard deviation, s, of 0.28 was found. Generally, healthy, female adults have a red blood cell count of 4.8. Conduct a hypothesis test to determine if the red blood cell count...

Statistics
in a population where 45%of voters prefer candidate A. an organization conducts a poll of 5 voters.Find the probability that 2 of the 5 voters will prefer Candidate.

Statistics
a manufacturing machine has a 8% defect rate. if 5 items are chosen at random, what is the probability that at least one will have a defect

Statistics
if a seed is planted, it has a 70% chance of growing into a healthy plant.if 6 seeds are planted, what is the probability that exactly 1 doesn't grow?

statistics
At one college, GPAs are normally distributed with a mean of 2.6 and a standard deviation of 0.6. What percentage of students at the college have a GPA between 2 and 3.2?

stat
the probability that a student pass a test in statistics is 2/3, and the probability that both a test in statistics and mathematics is 14/45. the probability that passes at least one test is 4/5. what is the probability that passes the test in mathematics?

Probability and math statistics
We have two coins, C0 and C1, that looks identical but have different probabilities (0.5 and 0.7 respectively) of showing Heads. A coin is chosen at random and then is tossed X times until a Head comes up. Denote by H0 and H1 the hypotheses that the chosen coin is C0 and C1 ...

Probability and math statistics
We have two coins, C0 and C1, that looks identical but have different probabilities (0.5 and 0.7 respectively) of showing Heads. A coin is chosen at random and then is tossed X times until a Head comes up. Denote by H0 and H1 the hypotheses that the chosen coin is C0 and C1 ...

Statistics
Can someone please explain this to be, so that I can understand this problem? Select three different five-card combinations or five-card hands from your favorite card game that utilizes a standard 52-card deck containing four suits (clubs, hearts, diamonds, and spades), with ...

statistics
Select three different five card combinations or five-card hands from your favorite card game that utilizes a standard 52-card deck containing four suits (clubs, hearts, diamonds, and spades), with each suit containing 13 cards with numbers 2-10 and face cards ace, king, queen...

Statistics
Can someone please help with this? A measurement follows the normal distribution with a standard deviation of 15 and an unknown expectation μ. You can consider that measurement to be the "original" distribution. Two statisticians propose two distinct ways to estimate the ...

STATISTIC
A survey of Internet users reported that 21% downloaded music onto their computers. The filing of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 31% from a survey taken two years before. Suppose we are not exactly sure ...

Business Statistics
The growth in bad-debt expense for ABC Company over the last 20 years is given , year growth in debt expense 1997 0.11 1998 0.09 1999 0.08 2000 0.08 2001 0.1 2002 0.11 2003 0.12 2004 0.1 2005 0.07 2006 0.09 2007 0.08 2008 0.05 2009 0.04 2010 0.08 2011 0.5 2012 0.01 2013 0.4 ...

Statistics
Select three different five card combinations or five-card hands from your favorite card game that utilizes a standard 52-card deck containing four suits (clubs, hearts, diamonds, and spades), with each suit containing 13 cards with numbers 2-10 and face cards ace, king, queen...

statistics
In the distributions of two populations combined mean of fourteen observations is 14 and if the sum of the first seven observations for population one and mean of population two are 90 and 16 respectively ,then find the last (eighth)observation of population one and the mean ...

Science
I need help on this letter. You do not have to give me full answers but if you do give me a full answer, I will use it but edit it into my own words. Now it is time to apply and share what you have learned so far about energy sources. After completing the U.S. Overview ...

Statistics
A scratch-card costs 5¤ and has two possible prizes. There is a 10% chance you get 5¤ back and a 1% chance you get 100¤. In all other cases, you get nothing. Let X denote your net winnings, i.e, (X = prize - cost). What are the expectation and standard deviation of X?

Re-post Langauge arts
Plugged In, but Tuned Out: The Evil Influence of the MP3 Player Darrell Thomas I. Invasion of the Body Snatchers: Have you noticed a change in the world around you recently? Have you seen how more and more people are walking around with little white rectangles in their hands ...

Probability and Statistics
Hi, I am having a lot of trouble with Normal Distribution. I do online school and this lesson didn't really explain how to exactly complete the following problems. My teacher said that the answers to the problems below were all incorrect. I would greatly appreciate any help ...

statistics
find n if c(n,3)=120

Math
In Mike's English class at university there are 178 students, of whom 51 also study history and 44 also study statistics. There are another 85 students who also study history, of whom 25 study statistics also. Another 35 students study only statistics. If 15 students study all...

Statistics
Given 5 flags of different colors, how many different signals can be made by displaying them in a vertical line using any number at a time?

Statistics
what is the probability of throwing less than 11 with two dice?

Statistics
A man will win $1 if he throws 1,2,3, or 4 and will lose $3 if he throws a 5 or 6 with a single die. If the man will throw a die, what will be his mathematical expectation?

Statistics
A student takes true or false test consisting of 10 questions by just guessing at each answer. Find the probability that the student's score will be 80% or more?

Statistics
if 5 dice are thrown find the probability that at least 3 of them will turn up 6

Statistics
the probability that A hits a target is 1/4 and the probability that B hits the target id 1/3. if each fires once and the target is hit only once, what is the probability that A hit the target?

Statistics
Find the probability of getting a prime number thrice by tossing a die 10 times.

Statistics
In a gambling game a man is paid $5 if he gets all heads or all tails when 3 coins are tossed, and he pays out of $3 if either 1 or 2 heads show. what is his expected gain or loss of the 3 coins?

Statistics
If the odds are 3 to 5 in favor of man receiving $200 if a certain act is performed, find his mathematical expectation.

Statistics
There are two types of ice cream cones, chocolate and vanilla. You and 24 of your friends (25 total people) are going to buy ice cream cones. If 15 people buy vanilla cones, and 20 people buy chocolate cones, how many people bought both chocolate and vanilla ice cream cones?

Statistics
Three men and two women are seated in a row of 6 chairs in an auditorium. If the seats at either end of the row are occupied by tom and jerry, how manu different ways can the five people be seated?

statistics
You are a researcher for a professional research firm.Your firm has won a contract to do a study for an air travel industry publication

Statistics
The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20 - 25 minutes to ...

Statistics
what are the odds against tossing a 7 or an 11 in a single throw pair of dice.

Statistics
There are 3 short questions on math test. for each question, 1 mark will be awarded for a correct answer and no mark for wrong answer. if the probability that mary correctly answers a question in a test is 2/3, determine the probability that mary correctly answers a question ...

Statistics
50 apples from an orchard are randomly selected. A mean apple diameter of 2.22 inches is calculated with a margin of error for a 95% confidence interval of ±0.13. What is the interval estimate of the population mean? 1.99 < μ < 2.23 2.09 < μ < 2.35 2.09 <...

statistics
what is the meaning of estimated probability. how do i find what to start or how to even start?

Statistics
Two cards are drawn in succession from a deck without replacement. What is the probability that both cards are greater than 2 and less than 8?

Statistics
Two cards are drawn in succession from a deck without replacement. What is the probability that both cards are greater than 2 and less than 8?

Statistics
A student s to answer 10 out of 13 questions in an exam. How many choices he has if he must answer at least 3 of the first 5 questions.

Statistics
A student is to answer 10 out of 13 questions in an exam. how many choices he has if he must answer at least 3 of the first

Statistics
In how many different ways can a chemistry book, a calculus book, a history book and a dictionary be arranged on a shelf so that the chemistry book or the history book appears first?

Statistics
a pair of dice is tossed. find the probability of getting a total of 8.

Statistics
3 bolts and 3 nuts are in a box. 2 parts are chosen at random. Find the probability that 1 is a bolt and 1 is a nut.

Statistics
In how many ways can 10 different books be divided among a, b and c so that 5 given to A, to 3 to B and 2 to C.

statistics
Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84 84 mmHg and a standard deviation of 9 9 mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings that are greater than ...

STATISTICS
A coin is tossed 99 times. What is the probability of getting all heads? Express your answer as a simplified fraction or a decimal rounded to four decimal places.

statistics
The U.S. Department of Labor collects data on unemployment insurance payments. Suppose that during 2009 a random sample of 80 unemployed people in Alabama received an average weekly benefit of $201.85, whereas a random sample of 65 unemployed people in Mississippi received an ...

math
Book 1 255 book 2 235 book 3 178 book 4 299 book 5 150 book 6 67 book 7 82 book 8 267 book 9 188 book 10 142 book 11 281 book 12 138 book 13 326 book 14 264 book 15 103 ^ number of pages What would be the best graph or display to represent your Home Library Statistics data? Why?

Elementary Statistics
Ten horses are entered in a horse race. How many permutations of 1st, 2nd, and 3rd place winners are there?

Math (Statistics)
In exercise 12, the following data on x = average daily hotel room rate and y = amount spent on entertainment (The Wall Street Journal, August 18, 2011) lead to the estimated regression equation ŷ = 17.49 + 1.0334x. For these data SSE = 1541.4. City: Boston Denver Nashville ...

Statistics
Can 2 X 2 between-subject ANOVA be used if participants were from the same class and all completed the same survey? For example, say the two conditions were athletic status(athlete vs non-athlete) and parent status (parent or not a parent) and all participants completed the ...

statistics
In a study of red/green color blindness, 850 men and 2500 women are randomly selected and tested. Among the men, 81 have red/green color blindness. Among the women, 5 have red/green color blindness. Test the claim that men have a higher rate of red/green color blindness. I ...

Statistics
A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the distribution is approximated by a normal curve fine the probability that the battery will last . Less than 250 hours b. Between 225 and 375 hours c. More than ...

statistics
Recent studies, as summarized, for example, in E. Mortensen et al. (2002). The association between duration of breastfeeding and adult intelligence. Journal of the American Medical Ass o ciation , 287 , 2365–2371, suggest that breast-feeding of infants may increase their ...

statistics
A manufacturer ships toasters in cartons of 20. In each​ carton, they estimate a 10​% chance that any one of the toasters will need to be sent back for minor repairs. What is the probability that in a​ carton, there will be exactly 2 toasters that need​ repair?

English
Can you proof read or correct my sentence? Why does immigrant migrate even though we have a law as being illegal? There are various reasons for illegal immigrant migrating such as seeking for job, for safe life and for quality of life. Because of the unemployment, people tends...

Statistics
Answer the following questions. ​(a) The random variable x is distributed​ normally, with x~N(80,100) Find the probability that x is greater than 90. x >90. ​(b) Find P(x<85). ​(c) Find P(76<x<84).

Statistics
There is a 0.0416 probability that a​ best-of-seven contest will last four​ games, a 0.0804 probability that it will last five​ games, a 0.2132 probability that it will last six​ games, and a 0.6648 probability that it will last seven games. Find the mean and standard ...

Statistics
The probability of a randomly drawn individual having blue eyes is 0.51. A) What is the probability that seven people drawn at random all have blue​ eyes? ​(b) What is the probability that one of the sample of seven has blue​ eyes?

Statistics
If the slope of the regression line is negative and the correlation coefficient is -0.5, coefficient of determination is: r = -0.5 r2 = 0.25 but because slope of regression line is negative, then coefficient of determination would be also negative. r2 = -0.25

Statistics
The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X: True or False - I believe it is True because calculating the correlation coefficient for X and Y and Y and X will give you the same answer.

Statistics
If the slope of the regression line is negative and the correlation coefficient is -.5, coefficient of determination is: - It would be -0.25. Correlation coefficient = r and coefficient of determination = r^2. Then, coefficient of determination would be (-0.50)^2 = 0.25, but ...

Statistics
The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X. True - If you were to find the correlation coefficient with a given data set for x and y, it would have the same correlation coefficient value as y and x. Can you check if ...

Statistics
In 2015, the average price of new homes in a certain suburb was $145,000. Assume that this mean is based on a random sample of 1000 new home sales and that the sample standard deviation is $24,000. Construct a 99% confidence interval for the 2002 mean price of all such homes.

statistics
The distance travelled in a week by sales staff employed by a nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. a) less than 80 miles, b) more than 250 miles, c) between 100 and 300 miles. d) A reduced ...

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