Essay
Aptitude Test Scores
Two random samples of 40 students were drawn independently from two populations of students.Assume their aptitude tests are normally distributed (total points = 100).The following statistics regarding their scores in an aptitude test were obtained: 
.
-{Aptitude Test Scores Narrative} Estimate with 95% confidence the difference between the two population means.
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4 ± 3.25.Thus,LCL = .75,and UC...View Answer
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