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Problem 2


Is there a difference between the quantitative problem solving skills of physical science majors (geology/physics/chemistry/…) and business majors?  GRE quantitative test scores for both groups are summarized below.  Find a 95% confidence interval for the true mean difference between the scores of physical science majors and business majors.  Is there a significant difference?  If so who does better?

physical science majors        business majors n = 38                                    n = 42 sample mean = 692              sample mean = 594 s = 149                                 s = 151


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