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A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.5 years with a standard deviation of 6.4 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years. Part (a) Is this a test of one mean or proportion? test of one mean test of proportions - Part (b) State the null and alternative hypotheses. O Ho: H S 15 Hai H > 15 O Ho: M = 15 Ha: H # 15 O Ho: H = 15 Ha: H > 15 O Ho: H # 15 Hai H = 15 O Ho: H 2 15 Ha: H p-value, we reject the null hypothesis. Since a > p-value, we do not reject the null hypothesis. Since a