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A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service...

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Statistics

A telephone service representative believes that the proportionof customers completely satisfied with their local telephoneservice is different between the West and the Northeast. Therepresentative's belief is based on the results of a survey. Thesurvey included a random sample of 12401240 western residents and13001300 northeastern residents. 46%46% of the western residentsand 35%35% of the northeastern residents reported that they werecompletely satisfied with their local telephone service. Find the98%98% confidence interval for the difference in twoproportions.

Step 2 of 3:

Find the value of the standard error. Round your answer to threedecimal places.

Step 3 of 3:

Construct the 98%98% confidence interval. Round your answers tothree decimal places.

Answer & Explanation Solved by verified expert
4.0 Ratings (473 Votes)
Solution Given thatn1 12401 x1 n1 046n2 13002 x2 n2 0351 Point estimate of    See Answer
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