Finding Predicted Value and Prediction Interval Refer to the data described in Exercise 12 and assume that the necessary conditions of normality and variance are met.

a. Find the predicted Flesch Reading Ease score for a page that has an average of 4.0 characters per word.

b. Find a 99% prediction interval estimate of the Flesch Reading Ease score for a page that has an average of 4.0 characters per word.

c. How do the results from parts

(a) and

(b) compare to the observed pair of data consisting of 4.0 characters per word and a Flesch Reading Ease score of 86.2?