Question: An analyst in a government ministry is interested in the
An analyst in a government ministry is interested in the average cost of textbooks per semester for a college student. A previous estimate suggests that the average cost of textbooks per semester is $700. The analyst conducts a random sample of 75 college students, with a sample average cost of $756 and a standard deviation of $132.Is there evidence that average text book costs per semester have increased for college students? You have already examined this problem, in Chapter 6 Review Exercise 7.Complete a formal hypothesis test, with a 5% level of significance.
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