SOLUTION: In a survey of 3236 ​adults, 1495 say they have started paying bills online in the last year.
Construct a​ 99% confidence interval for the population proportion. Inter
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Question 1121478: In a survey of 3236 adults, 1495 say they have started paying bills online in the last year.
Construct a 99% confidence interval for the population proportion. Interpret the results.
A 99% confidence interval for the population proportion is left parenthesis nothing comma nothing right parenthesis
.
(Round to three decimal places as needed.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
0.462 is p hat, the point estimate
SE is sqrt (p*(1-p)/n)
This is sqrt[ 0.462*0.538/3236]=0.0088
z=2.576 for CI 99% z0.995
the half interval is z*SE=0.0227 or 0.023
(0.439, 0.485)
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