A recent GSS reported that the 600 females had a mean of 7.5 close friends (a=8,4) and the 575 male had a mean of 8.8 close friends (a=9.5).  a) construct a 95% confidence interval estimate for the difference between the two population means. b) perform a significance test comparing the two population means. Use  a= 0.05

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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.