A poll finds that 54% of the population approves of the job that the President is doing; the poll has a margin of error of 4% (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. (Type integers or decimals rounded to two decimal places as needed.) b. The minimum sample size was. (Round up to the nearest whole number.)
A poll finds that 54% of the population approves of the job that the President is doing; the poll has a margin of error of 4% (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. (Type integers or decimals rounded to two decimal places as needed.) b. The minimum sample size was. (Round up to the nearest whole number.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A poll finds that 54% of the population approves of the job that the President is doing; the poll has a margin of error of 4% (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.
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(Type integers or decimals rounded to two decimal places as needed.)
b. The minimum sample size was
(Round up to the nearest whole number.)
20
000
000
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