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March 4, 2015

Homework Help: statistics

Posted by Elizabeth on Sunday, August 22, 2010 at 3:04pm.

2. The director of admissions at a large university advises students that the cost of textbooks will average more than $300 for a typical semester. A random sample of 80 students enrolled in the university shows a sample mean cost of $315.40 and a sample standard deviation of $43.20. Use a 5% level of significance to test the director's claim.

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