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Exam 1 Study Guide - E Ho p>.55 Ha p<.55 2 What is the...

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MSCI 3710 Test on one population proportion (Chapter 10): Sample Exam Problem 7 Note: The following problem is taken from the Mid-term Exam in Spring 2002, questions 15-18. The Vice President of Dorite Energy believes that less than 60% of the shareholders of the company read the annual report. From a random sample of 180 shareholders, 99 read the annual report. Test the VP’s belief, at 1% significance level. 1. What are the hypotheses for this test? A. Ho: p = 0 Ha: p 0 B. Ho: p < .80 Ha: p > .80 C. Ho: p > .60 Ha: p < .60 D. Ho: p < .55 Ha: p > .55
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Unformatted text preview: E. Ho: p > .55 Ha: p < .55 2. What is the computed value of the test statistic? A. -1.37 B. -2.88 C. -2.38 D. 1.68 E. -3.68 3. Construct a 99% confidence interval for estimating the proportions of shareholders of the company that read the annual report. A. 0 to 0.0525 B. -0.0181 to 0.0869 C. -0.036 to 0.0525 D. 0.4542 to 0.6458 E. 0.0092 to 0.0628 4. At 1% significance level, the decision rule is to reject Ho if the calculated test statistic is A. < -2.33 or > 2.33 B. < -2.33 C. < -1.96 or > 1.96 D. > 2.33 E. < 1.645...
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