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November 23, 2014

Homework Help: business

Posted by joi on Thursday, March 11, 2010 at 9:37am.

You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this year’s students significantly different from the long-run average? At what alpha level would it be significant?

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