Question

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?)

Answer #1

A study of 420,010 cell phone users found that 130 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
0.0418% for those not using cell phones. Complete parts (a) and
(b).
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.
____%<p<____% (Round to...

A study of 420,059 cell phone users found that 135 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
0.0314% for those not using cell phones. Complete parts (a) and
(b).
a)Use the sample data to construct a
95% confidence interval estimate of the percentage of cell
phone users who develop cancer of the brain or nervous system.
b) do cell phone...

A study of 420 comma 093 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
0.0311% for those not using cell phones. Complete parts (a) and
(b).
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.
_%<p<...

A study of
420 comma 022420,022
cell phone users found that
133133
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
0.03270.0327%
for those not using cell phones. Complete parts (a) and
(b).
a. Use the sample data to construct a
9090%
confidence interval estimate of the percentage of cell phone
users who develop cancer of the brain or nervous system.
nothing%less...

A study of 420,005 cell phone users found that 135 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
0.0331% for those not using cell phones. Complete parts (a) and
(b). a. Use the sample data to construct a 95% confidence interval
estimate of the percentage of cell phone users who develop cancer
of the brain or nervous system.

A study of 420,095 cell phone users found that 134 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
0.0328% 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.
__% < p < __%

A study of 420 comma 042 cell phone users found that 133 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
0.0313% for those not using cell phones. Complete parts (a) and
(b).
a. Use the sample data to construct a 95% confidence interval
estimate of the percentage of cell phone users who develop cancer
of the brain or nervous system.
%...

A study of 420 comma 061 cell phone users found that 134 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
0.0327% for those not using cell phones. Complete parts (a) and
(b). a. Use the sample data to construct a 95% confidence interval
estimate of the percentage of cell phone users who develop cancer
of the brain or nervous system. nothing%less...

In a study of 452,318 cell phone users, it was found that 71
developed cancer of the brain or nervous system. Assuming that cell
phones have no effect, there is a 0.000208 probability of a person
developing cancer of the brain or nervous system. We therefore
expect about 95 cases of such cancer in a group of 452,318 people.
Estimate the probability of 71 or fewer cases of such cancer in a
group of 452,318 people. What do these results...

In a study of 389,845 cell phone users, it was found that 172
developed cancer of the brain or nervous system. Assuming that cell
phones have no effect, there is a 0.0004630 probability of a
person developing cancer of the brain or nervous system. We
therefore expect about 181 cases of such cancer in a group of
389,845 people. Estimate the probability of 172 or fewer cases of
such cancer in a group of 389 comma 389,845 people. What do...

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