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A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years

A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information.

Today

Five Years Ago

82

88

2

112.5

54

n

45

36

The point estimate for the difference between the means of the two populations is?

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