Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, u, is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 44 hours and that the standard deviation is 4 hours. 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? v when, in A Type I error is ? fact, u is ? v the hypothesis that u is ? ? v. Suppose that we decide to reject the null hypothesis. What sort of error might we be making? ?

Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, u, is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 44 hours and that the standard deviation is 4 hours. 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? v when, in A Type I error is ? fact, u is ? v the hypothesis that u is ? ? v. Suppose that we decide to reject the null hypothesis. What sort of error might we be making? ?

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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The scores on a standardized test are normally distributed with a mean of 100 and standard deviation of 25. What test score is 2.3 standard deviations above the mean? Submit Question
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The scores on a standardized test are normally distributed with a mean of 95 and standard deviation of 25. What test score is 0.3 standard deviations below the mean?
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