#5. A study of420,029 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to
Posted: Mon Nov 15, 2021 12:26 pm
#5.
A study of420,029 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
0.0446% for those not using cell phones.
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.
%
(Round to three decimal places as needed.)
A study of420,029 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
0.0446% for those not using cell phones.
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.
%
(Round to three decimal places as needed.)