Question: Construct a 98% confidence interval for the average value of y for Problem 12.8; use x = 20. Construct a 98% prediction interval for a

Construct a 98% confidence interval for the average value of y for Problem 12.8;

use x = 20. Construct a 98% prediction interval for a single value of y for Problem 14.3; use x = 20.Which is wider? Why?

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