Question

Each person in a random sample of 5000 "likely voters" was questioned about his or her political views. Of those surveyed, 3402 felt that "the economy's state" was the most urgent national concern.

A. Using the plus four estimate, p, we estimate the proportion of likely voters that felt the economy's state was the most urgent national concern to be:

B. The standard error SE of p, the estimated proportion viewing the economy's state as most urgent, is:

C. A 99% confidence interval for the proportion of all likely voters that feel the economy's state is the most urgent national concern is given by (use the plus four confidence interval procedure):

D. If we want to estimate p, the population proportion of likely voters that believe the economy's state is the most urgent national concern with 99% confidence and a margin of error no greater than 3%, how many likely voters need to be surveyed? Assume that you have no idea of the value of p.

Answer 1

n must be 1844

1844 voters need to be surveyed