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Today 9:36 PM Edit All Photos core: 0 of 1 pt 2 of 14 (7 complete) Hw Score: 32.86%, 4.6 of 14p structor-created question Question Help users found that 137 of them developed cancer of the brain or nervous system Complete parts (a) and ) a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer af the brain or nervous system (Round to three decimal places as needed.) b. Prior to this study of cell phone use, the rate of such cancer was furdt be 0042% orn se ot inge-phres Do- reus nappe cancer of the brain or nervous system that is different from the rate of such cancer among hose not using oel phones? Why or why nor? to 0 A. No, because 0.0427% is included in the confidence interval. O B. No, because 0.0427% is not included in the confidence interval C. Yes, because 0.0427% is not included in the confidence nena. Click to select your answerls) and then click Check Answer
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Sample number of events Sample size: Sample proportion Level of significancee Two tailed critical value: 137 givern n420035 given 2X p--0.00033 α 0.10 given 90% level 1.645 from z table Margin of error: 40.000046 1 Lower limit: 0.00028 0.00037 Upper limit: a)The confidence interval 0.028 % < p < 0.037 % b)yes because 0.0427% is not included in the confidence interval

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