A study of420,048cell phone users found that137of 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 be0.0256%for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a90%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%(Round to three decimal places as needed.)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.No,because0.0256%isincluded in the confidence interval. B.Yes,because0.0256%isincluded in the confidence interval. C.Yes,because0.0256%is notincluded in the confidence interval. D.No,because0.0256%is notincluded in the confidence interval. A study of 420,048 cell phone users found that 137 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 0.0256% 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 ornervous system.%

Given that, n=420048 x=137 p¯=xn=137420048=0.000326 90% C.I. for p P(-z<p<z)=0.90 z=1.645 [ from z table ] C.I. =p¯±zp¯(1-p¯)n=0.000326±1.6450.000326(1-0.000326)420048=0.000326±0.0000458=( 0.0002802, 0.0003718) 0.028<p<0.037 So, option(d) is correct.

Answered: study of 420,048 cell phone users found…

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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Related questions

Question

A study of

420,048

cell phone users found that

137

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

0.0256%

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.

enter your response here%<p<enter your response here%

(Round to three decimal places as needed.)

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?

No,

because

0.0256%

included in the confidence interval.

Yes,

because

0.0256%

included in the confidence interval.

Yes,

because

0.0256%

is not