What is the test value for this hypothesis

Reference no: EM13187195

At a certain university, the average cost of books was $380 per student last semester and the population standard deviation was $90. This semester a sample of 40 students revealed an average cost of books of $405 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?

Reference no: EM13187195

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