Question Suppose that the pages per book in a library are normally distributed with an unknown mean and standard deviation. The book lengths of 39 randomly sampled books are used to estimate the mean...

Question Suppose that the pages per book in a library are normally distributed with an unknown mean and standard deviation. The book lengths of 39 randomly sampled books are used to estimate the mean of the population. What t-score should be used to find the 99% confidence interval for the population mean? Use the portion of the table from the book or a calculator. If you use a calculator, round your answer to three decimal places.