According to a recent study, 30% of American adults will not sit on a public toilet seat. You are surprised by this and select yourown random sample of 50 American adults and record X = the number of them that will not sit on a public toilet seat.Would it be appropriate to use a normal distribution to model the sampling distribution of X?No, there are at least 10 "successes" expected, but there are not at least 10 "failures" expected so it is not appropriate touse a normal distribution to model the sampling distribution of X.Yes, the sample size is at least 30, so it is appropriate to use a normal distribution to model the sampling distribution ofX.Yes, there are at least 10 "successes" expected and 10 "failures" expected so it is appropriate to use a normaldistribution to model the sampling distribution of X.No, the sample size is not at least 50, so it is not appropriate to use a normal distribution to model the samplingdistribution of X.No, there are not at least 10 "successes" expected, but there are at least 10 "failures" expected so it is not appropriate touse a normal distribution to model the sampling distribution of X.

The question is about sampling dist. Given : Popl. prop. of adults will not sit on a public toilet…

Answered: According to a recent study, 30% of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. After taking the test and seeing your score for this subsection, you're interested in the mean score, µ, among the general population on this subsection. The website reports that u is 148, but you believe that u is greater than 148. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 155 and that the standard deviation of their scores is 28. Based on this information, answer the questions below. What are the null hypothesis (H,) and the alternative hypothesis (H,) that should be used for the test? H: u is ? |H;: µ is ? ? In the context of this test, what is a Type I error? A Type I error is ? fact, u is ? v the hypothesis that u is ? v? v. when, in Suppose that you decide to reject the null hypothesis. What sort of error might you be making? ?
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