Probability and Statistics for Engineering and the Sciences
Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 15.2, Problem 16E

a.

To determine

Verify the value of the test statistic given by MINITAB is correct or not.

b.

To determine

Test the appropriate hypothesis.

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A study of 420,035 cell phone users found that 0.0326​% of them developed cancer of the brain or nervous system. Prior to this study of cell phone​ use, the rate of such cancer was found to be 0.0331​% for those not using cell phones. Complete parts​ (a) and​ (b).Question content area bottomPart 1a. Use the sample data to construct a 95​% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system.enter your response here​%<p<enter your response here​%​(Do not round until the final answer. Then round to three decimal places as​ needed.)Part 2b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell​ phones? Why or why​ not?A.Yes​, because 0.0331​% is not included in the confidence interval.B.Yes​, because 0.0331​% is included in the confidence interval.C.No​, because 0.0331​% is included in the confidence interval.D.No​,…
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A study of 420,072 cell phone users found that 130 of them developed cancer of the brain or nervous system. Prior to this study of cell phone​ use, the rate of such cancer was found to be 0.0225​% for those not using cell phones. Complete parts​ (a) and​ (b). a. Use the sample data to construct a 90​% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell​ phones? Why or why​ not?

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