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 deviation of 6.5 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years or not. State the null and alternative hypotheses. what is the standard deviation? (Enter your answer to one decimal place. If the standard deviation is not known enter DNE.) Calculate the following. (i) Enter your answer to one decimal place. x = (ii) Enter your answer to one decimal place. s= Find the p-value. (Round your answer to four decimal places.)
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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 deviation of 6.5 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years or not.
State the null and alternative hypotheses.
what is the standard deviation? (Enter your answer to one decimal place. If the standard deviation is not known enter DNE.)
Calculate the following.
x =
(ii) Enter your answer to one decimal place.
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