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webassign.net A random survey of 75 death row Inmates revealed that the mean length of time on death row is 17.2 years with a standard years. deviation of 6.8 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 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 2 15 Ha: H 15 O Ho:H = 15 Ha: H > 15 O Ho: M = 15 Ha: H $ 15 Part (c) Is this a right-tailed, left-tailed, or two-tailed test? O right-tailed test left-tailed test two-tailed test Part (d) What symbol represents the random variable for this test? O X On Oa O o OH - Part (e) In words, define the random variable for this test. the proportion of time spent on death row for 75 inmates the amount of time spent on death row for 75 inmates the mean time spent on death row for 75 inmates the standard deviation of time spent on death row for 75 inmates the number of inmates on death row