A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the South and the Midwest. The representative's belief is based on the results of a survey. The survey included a random sample of 580580 southern residents and 680680 midwestern residents. 52%52% of the southern residents and 40%40% of the midwestern residents reported that they were completely satisfied with their local telephone service. Find the 90%90% confidence interval for the difference in two proportions. Step 3 of 3 : Construct the 90%90% confidence interval. Round your answers to three decimal places.
A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the South and the Midwest. The representative's belief is based on the results of a survey. The survey included a random sample of 580580 southern residents and 680680 midwestern residents. 52%52% of the southern residents and 40%40% of the midwestern residents reported that they were completely satisfied with their local telephone service. Find the 90%90% confidence interval for the difference in two proportions. Step 3 of 3 : Construct the 90%90% confidence interval. Round your answers to three decimal places.
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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A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the South and the Midwest. The representative's belief is based on the results of a survey. The survey included a random sample of 580580 southern residents and 680680 midwestern residents. 52%52% of the southern residents and 40%40% of the midwestern residents reported that they were completely satisfied with their local telephone service. Find the 90%90% confidence interval for the difference in two proportions.
Step 3 of 3 :
Construct the 90%90% confidence interval. Round your answers to three decimal places.
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