Solution Found!
In Galton's height data (Figure 7.1, in Section 7.1), the
Chapter 7, Problem 5E(choose chapter or problem)
In Galton’s height data (Figure 7.1, in Section 7.1), the least-squares line for predicting forearm length \((y)\) from height \((x)\) is \(y=-0.2967+0.2738x\).
a. Predict the forearm length of a man whose height is 70 in.
b. How tall must a man be so that we would predict his forearm length to be 19 in.?
c. All the men in a certain group have heights greater than the height computed in part (b). Can you conclude that all their forearms will be at least 19 in. long? Explain.
Equation Transcription:
Text Transcription:
(y)
(x)
y=-0.2967+0.2738x
Questions & Answers
QUESTION:
In Galton’s height data (Figure 7.1, in Section 7.1), the least-squares line for predicting forearm length \((y)\) from height \((x)\) is \(y=-0.2967+0.2738x\).
a. Predict the forearm length of a man whose height is 70 in.
b. How tall must a man be so that we would predict his forearm length to be 19 in.?
c. All the men in a certain group have heights greater than the height computed in part (b). Can you conclude that all their forearms will be at least 19 in. long? Explain.
Equation Transcription:
Text Transcription:
(y)
(x)
y=-0.2967+0.2738x
ANSWER:
Step 1 of 4
Given that
The least-squares line for predicting forearm length from height is