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.

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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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