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 phone​ use, the rate of such cancer was found to be0.0223​% for those not using cell phones. Complete parts​ (a) and​(b). a. Use the sample data to construct a 90​% 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 cell​ phones? Why or why​ not?
A. No, because 0.0223​% is not included in the confidenceinterval.
B.No​, because 0.0223% is included in the confidenceinterval.
C. Yes, because 0.0223% is included in the confidenceinterval.
D. Yes, because 0.0223​% is not is not included in theconfidence interval.
