Mathematics, 07.05.2020 03:57 pindu
At a certain university, the average cost of books per student was $400 per student last semester. In a sample of 40 students this semester, their average cost was $430 with a standard deviation of $80. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
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At a certain university, the average cost of books per student was $400 per student last semester. I...
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