MATH 533 Week 5 Homework Problems.

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Mike Mentzer

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Mathematices

Course

MATH 533 Applied Managerial Statistics

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DeVry

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5

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WEEK 5 HOMEWORK In hypothesis testing the statistical conclusion is either to reject or not to reject the null hypothesis based on the sample data. Which of the following statements is true? The conclusion will never reject a true null hypothesis. The conclusion is always subject to error because it is based on sample data. The conclusion is always free from error if the correct procedure is followed. The conclusion will always reject a false null hypothesis. If a company wants to prove that the proportion (p) of its revenues from overseas operations is more than 18%, the null and alternate hypotheses are. 1155700206908H0: p = 0.18 and H1: p > 0.18 H0: p = 0.18 and H1: p ≤ 0.18 H0: p ≤ 0.18 and H1: p > 0.18 H0: p > 0.18 and H1: p < 0.18 A test of the hypotheses, H0: p = 0.18 and H1: p > 0.18 is a . one-tailed test test of two sample means test of two sample proportions two-tailed test The dean of a business school claims that the average starting salary of its graduates is more than 85(in $000’s). It is known that the population standard deviation is 10 (in $000’s). Sample data on the starting salaries of 64 randomly selected recent graduates yielded a mean of 88(in $000s). What is the value of t

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