A random survey of 75 death row inmates revealed that the


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.

Is the population standard deviation known and, if so, what is it?

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Basic Statistics: A random survey of 75 death row inmates revealed that the
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