Given the regression equation, $\hat { Y }$ = 62 + 0.4X, where X is length at birth and Y is adult height, what adult height would you predict for a baby 20 inches long at birth?
A) 68 inches
B) 54 inches
C) neither 68 inches nor 54 inches
D) cannot be determined from the information given.

Question

Quizplus · Accepted Answer

To predict the adult height for a baby 20 inches long at birth, substitute X = 20 into the regression equation: $\hat { Y }$ = 62 + 0.4(20) = 62 + 8 = 70 inches. Therefore, the correct answer is neither 68 inches nor 54 inches.

Given the Regression Equation Y^\hat { Y }Y^ = 62 + 04X, Where X Is Length at Birth and Y Is

Given the Regression Equation $\hat { Y }$ = 62 + 04X, Where X Is Length at Birth and Y Is