Business, 24.08.2021 02:10, asialuv

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. Final examination scores from a random sample of students enrolled today and from a random sample of students enrolled five years ago were selected. Today Five years ago

x bar 82 88

σ squared 112.5 54

η 45 36

The 95% confidence interval for the difference between the two population means is .

a. -9.92 to -2.08

b. -3.92 to 3.92

c. -13.83 to 1.84

d. -24.228 to 12.23

Answers: 1

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A statistics teacher wants to see if there is any difference in the abilities of students enrolled i...