A poll finds that 48% of the population approves of the job that the President is doing; the poll has a margin of error of 8% (assuming a 95% degree of confidence). a. What is the 95% confidence interval for the true population proportion that approves of the President's performance? b. What was the minimum size of the sample for this poll? a. Find the 95% confidence interval.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A poll finds that 48% of the population approves of the job that the President is doing; the poll has a margin of error of
8% (assuming a 95% degree of confidence).
a. What is the 95% confidence interval for the true population proportion that approves of the President's performance?
b. What was the minimum size of the sample for this poll?
a. Find the 95% confidence interval.
<p<
(Type integers or decimals rounded to two decimal places as needed.)
Transcribed Image Text:A poll finds that 48% of the population approves of the job that the President is doing; the poll has a margin of error of 8% (assuming a 95% degree of confidence). a. What is the 95% confidence interval for the true population proportion that approves of the President's performance? b. What was the minimum size of the sample for this poll? a. Find the 95% confidence interval. <p< (Type integers or decimals rounded to two decimal places as needed.)
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