(a)
To find out what height would you predict for a student with an arm span of
(a)
Answer to Problem 12E
We predict that the student will be
Explanation of Solution
Now, as we know that in the previous exercise the computer output of this data is given. And also as we know the general regression equation be as:
And the estimate a and b are given in the column of the computer output “Coef”:
Thus, we will evaluate it for finding the height for a student with an arm span of
Thus, this means that we predict that the student will be
(b)
To explain about how far do you expect the prediction in part (a) to be from the student’s actual height.
(b)
Answer to Problem 12E
The prediction will be off by
Explanation of Solution
It is given in the part (a) that:
We predict that the student will be
Then as it is given in the computer output that,
Thus, the expected error made when making predictions is given by
Chapter 12 Solutions
The Practice of Statistics for AP - 4th Edition
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