A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.4 years with a standard deviation of 6.3 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years. Which test should be used? State the distribution to use for the hypothesis test.
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- Alternative Hypothesis (H1): The population mean time on death row is different from 15 years. Show more…
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A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.4 years with a standard deviation of 6.3 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years. Which test should be used? t15 t5 t74 t75
Michael N.
A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.8 years with a standard deviation of 6.9 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years or not. a) Find the p-value (round answer to 4 decimal places)
David N.
Use the following information to answer the next seven exercises: Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study was then done to see if the mean time has increased in the new century. A random sample of 26 first-time convicted burglars in a recent year was picked. The mean length of time in jail from the survey was three years with a standard deviation of 1.8 years. Suppose that it is somehow known that the population standard deviation is 1.5. Conduct a hypothesis test to determine if the mean length of jail time has increased. Assume the distribution of the jail times is approximately normal. Is this a test of means or proportions?
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