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

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Statistics

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

In a study of cell phone use and brain hemispheric​ dominance,an Internet survey was​ e-mailed to 2330 subjects randomly selectedfrom an online group involved with ears. 1176 surveys werereturned. Construct a 99​% confidence interval for the proportionof returned surveys.

a) Find the best point estimate of the population proportionp.

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

​b) Identify the value of the margin of error 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 confidenceinterval. Choose the correct answer below.

A. One has 99% confidence that the sample proportion is equal tothe population proportion.

B. 99​% of sample proportions will fall between the lower boundand the upper bound.

C. There is a 99% chance that the true value of the populationproportion will fall between the lower bound and the upperbound.

D. One has 99​% confidence that the interval from the lowerbound to the upper bound actually does contain the true value ofthe population proportion.

Answer & Explanation Solved by verified expert
4.3 Ratings (611 Votes)
Solution Given thatn 2330x 1176a Point estimate sample proportion x n 1176 2330 05051 1 0505    See Answer
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