A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the Midwest and the West. The representative's belief is based on the results of a survey. The survey included a random sample of 12601260 midwestern residents and 13401340 western residents. 46%46% of the midwestern residents and 42%42% of the western residents reported that they were completely satisfied with their local telephone service. Find the 98%98% confidence interval for the difference in two proportions. Step 1 of 3 :   Find the point estimate that should be used in constructing the confidence interval.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.