A study of 420,047 cell phone users found that 130 of them developed cancer of the...

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A study of 420,047 cell phone users found that 130 of themdeveloped cancer of the brain or nervous system. Prior to thisstudy of cell phoneâ€‹ use, the rate of such cancer was found to be0.0223â€‹% for those not using cell phones. Complete partsâ€‹ (a) andâ€‹(b). a. Use the sample data to construct a 90â€‹% confidence intervalestimate of the percentage of cell phone users who develop cancerof the brain or nervous system.
b. Do cell phone users appear to have a rate of cancer of thebrain or nervous system that is different from the rate of suchcancer among those not using cellâ€‹ phones? Why or whyâ€‹ not?
A. No, because 0.0223â€‹% is not included in the confidenceinterval.
B.Noâ€‹, because 0.0223% is included in the confidenceinterval.
C. Yes, because 0.0223% is included in the confidenceinterval.
D. Yes, because 0.0223â€‹% is not is not included in theconfidence interval.

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Solution a The 90 confidence interval for population percentage isgiven as follows Where p is sample percentage q 100 p n is sample sizeand Z0102 is critical zvalue to construct See Answer

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