Question: In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks. a. Construct a 95% confidence interval estimate

In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks.

a. Construct a 95% confidence interval estimate of average class mark for a tutorial class of 20 students.

b. Construct a 95% prediction interval of average class mark for a tutorial class of 20 students.

c. Explain the difference in the results in

(a) and (b).

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