Use the following information for questions:
A regression between foot length (response variable in cm) and height (explanatory variable in inches) for 33 students resulted in the following regression equation: $\hat{y}$ = 10.9 + 0.23x
-What is the estimated average foot length for students who are 70 inches tall?
A) 27 cm
B) 28 cm
C) 29 cm
D) 30 cm

Question

Use the following information for questions:
 A regression between foot length (response variable in cm) and height (explanatory variable in inches) for 33 students resulted in the following regression equation: $\hat{y}$ = 10.9 + 0.23x
-What is the estimated average foot length for students who are 70 inches tall?
A) 27 cm
B) 28 cm
C) 29 cm
D) 30 cm

Quizplus · Accepted Answer

The estimated average foot length for students who are 70 inches tall is 27 cm. This is because the regression equation is $\hat{y}$ = 10.9 + 0.23x, and when x = 70, $\hat{y}$ = 10.9 + 0.23(70) = 27.

Use the Following Information for Questions: a Regression Between y^\hat{y}y^​

Use the Following Information for Questions:
a Regression Between $\hat{y}$