
Concept explainers
a.
Find the confidence interval for the
Find the prediction interval for the response
a.

Answer to Problem 58E
The confidence interval for the mean response is A: (10 to 14).
The prediction interval for the response is B: (4 to 20).
Explanation of Solution
The prediction interval is always wider when compared to the confidence interval. Based on the situation, interval B (4 to 20) is wider when compared to Interval A (10 to 14).
Thus, the confidence interval for the mean response is A (10 to 14) and the prediction interval for the response is B (4 to 20).
b.
Find the predicted value of the response variable for this value of the explanatory variable.
b.

Answer to Problem 58E
The predicted value of the response variable for this value of the explanatory variable is 12.
Explanation of Solution
The predicted value of the response variable for this value of the explanatory variable is as follows.
Thus, the predicted value of the response variable for this value of the explanatory variable is 12.
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Chapter 9 Solutions
STATISTICS-WILEYPLUS ACCESS
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