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The director of admissions at a large university advises parents of incoming students about the cost...

The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester. A sample of 49 students enrolled in the university indicates a sample average cost of $550 with a sample standard deviation of $40. State the null and alternative hypotheses. Using a 0.05 level of significance, is there evidence that the population average is more than $540?

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Math   Statistics-And-Probability   
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