Question: Constructing confidence intervals for the mean response. Refer to Example 10.6. For the following three changes in average speed, construct a 95% confidence interval for

Constructing confidence intervals for the mean response. Refer to Example 10.6. For the following three changes in average speed, construct a 95% confidence interval for the change in mpg.

(a) LOGMPH increases from 2.9 to 3.9 (18.2 to 49.4 mph).

(b) LOGMPH decreases from 3.7 to 2.7 (40.4 to 14.9 mph).

(c) LOGMPH increases from 2.8 to 3.3 (16.4 to 27.1 mph).

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