Question

A CNN poll of 1,518 adults nationwide on November 1-3, 2018, asked, "Do you approve or disapprove of the way Donald Trump is handling his job as president?" Thirty-nine percent of the respondents answered "approve."

(A) Using a 95% confidence level, a confidence interval for the population parameter estimated by the statistic stated above is from ________% to ________%. Be sure to show work and round your answers to the nearest tenth of a percentage point.
(B) Write a clear and complete English sentence interpreting the confidence interval for part (A) in the context of the opinion poll.

Answer 1

Let p denotes the true proportion of the respondents answered "approve."

A)

B) Out of 100 samples drawn, sample proportion will lie between (0.365, 0.415) for 95 samples.