Question: Using the data from Problem 12.47, compute the two-sided, 95% confidence interval for the mean value of Y at X = 5. Also, compute a

Using the data from Problem 12.47, compute the two-sided, 95% confidence interval for the mean value of Y at X = 5. Also, compute a similar interval at X = 11. Compare the two intervals and explain the difference in their widths.

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