Among 500 marriage license applications chosen atrandom in a given year, there were 48 in which the womanwas at least one year older than the man, and among 400marriage license applications chosen at random six yearslater, there were 68 in which the woman was at least oneyear older than the man. Construct a 99% confidenceinterval for the difference between the correspondingtrue proportions of marriage license applications in whichthe woman was at least one year older than the man.

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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.