Question
A study of 420,028 cell phone users found that 132 of them developed cancer of the...
A
study of 420,028 cell phone users found that 132 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 .0426% for those
not using cell phones. Complete parts a and b.
a) us 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
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? (is
.0426% included in the confidence interval?)
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