Question: In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks. Using the results of that problem: a.

In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks. Using the results of that problem:

a. At the 0.05 level of significance, is there evidence of a linear relationship between the tutorial class size and average class mark?

b. Construct a 95% confidence interval estimate of the population slope, β1.

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