Refer to the data on ages and numbers of breakdowns for seven machines given in Exercise 13.95.

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Refer to the data on ages and numbers of breakdowns for seven machines given in Exercise 13.95. Construct a 99% confidence interval for the mean number of breakdowns per month for all machines with an age of 8 years. Find a 99% prediction interval for the number of breakdowns per month for a randomly selected machine with an age of 8 years.
Refer to the data on ages and numbers of breakdowns
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