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 bottom Part 1 a. 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​%

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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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 bottom
Part 1
a. 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 2
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?
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​, because 0.0331​% is not included in the confidence interval. 

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