Microsoft Word - hw9.docxProblem 1. (7pts). The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester. He selected a sample of 64 students and recorded their textbook expenses for the semester. He then computed the sample mean cost of $612 and a sample standard deviation of $53. Use = 0.05 and the critical value approach. Is there evidence that the population mean is greater than $600?