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 = 0.75, an...View Answer
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