Suppose data is collected where x diameter of tree trunk in

Suppose data is collected where x = diameter of tree trunk in inches, and y = tree height in feet. If the LSR line equation is y = -3.6 + 3.1x, use the equation to predict the height of a tree with trunk diameter 19 inches.

52.3 feet

55.3 feet

58.3 feet

61.3 feet

Solution

y = -3.6 + 3.1x

Plug in x = 19 :

y = -3.6 + 3.1(19)

y = 55.3

Option B