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.
