Question

Use the sample data and confidence level given below to complete parts​ (a) through​ (d).

A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n=1022 and x=569 who said​ "yes." Use a 90% confidence level.

​a) Find the best point estimate of the population proportion p.

​(Round to three decimal places as​ needed.)

​b) Identify the value of the margin of error E.

E=

​(Round to three decimal places as​ needed.)

​c) Construct the confidence interval.

<p<

​(Round to three decimal places as​ needed.)

​d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.

A.There is a

9090​%

chance that the true value of the population proportion will fall between the lower bound and the upper bound.

B.

9090​%

of sample proportions will fall between the lower bound and the upper bound.

C.One has

9090​%

confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.

D.One has

9090​%

confidence that the sample proportion is equal to the population proportion.

Answer 1