What decision should the director create about the books


Hypothesis test for single mean:

The director of admissions at the University of Maryland, University College is concerned about high cost of textbooks for the students each semester.  A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.

Founded on the information, what decision should the director create about the books used for the courses if the goal is to keep the cost below $300?

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