2. The following MINITAB output presents the results of a hypothesis test for a population mean µ. One-Sample Z: X Test of mu = The assumed standard deviation 73.5 vs not = 73.5 2.3634 Variable X Mean 145 73.2461 2.3634 95% CI 0.1963 (72.8614, 73.6308) Z 0.196 StDev SE Mean -1.29 a. Is this a one-tailed or two-tailed test? b. What is the null hypothesis? c. What is the P-value?

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