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A survey of an urban university (population of 25,450) showed that 750 of 1100 students sampled attended a home football game during the season. Using the 99% level of confidence, what is the confidence interval for the proportion of students attending a football game?
[0.767, 0.814]
[0.6550, 0.7050]
[0.6659, 0.6941]
[0.6795, 0.6805]
A Pew research study recently randomly selected two groups of people, men and women and asked them if they agree with the following statement:
If an auditor takes a random sample of 36 accounts what is the probability that the mean balance will be less than 45?
from a population that is not normally distributed and whose standard deviation is not known a sample of 6 items is
A bag contains 5 blue balls and 8 purple balls. If 3 balls are chosen randomly and without replacement, form the bag. Let x be the number of blue balls obtained. Then x has a distribution.
What are the mean and standard deviation of the proportions of random samples of 400 motorcylce owners who own Harleys?
Please answer the following: Prove that the square of an even number is even. Make sure to show all steps required.
Assuming the population standard deviation of the amount spent per owner is $12, construct and interpret a 95% confidence interval for the mean amount spent per owner for an obedience class.
Define probability and explain its three perspectives. Provide an example of each. Explain the concept of mutually exclusive events. How do you compute the probability P(A or B) when A and B are, and are not, mutually exclusive.
Why do you use the chi-square statistic? Explain. What type of data is used with chi square analysis? Explain. What are the hypotheses in a chi-square test for independence? Explain.
a box contains one twenty-dollar bill and four one-dollar bills. two bills are randomly chosen one at a time without
How large of a sample would be necessary if no estimate were available for the proportion that support current policy?
let x be a discrete and nonnegative r.v. show thatexnbsp
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