What is the regression equation for predicting the annual maintenance/repair cost given age of the car?

What is the regression equation for predicting the annual maintenance/repair cost given age of the car?

The following information was obtained
from a study of car maintenance:

Age of
car (in years); X=8 and SDx=3

Cost
in annual maint./repairs ($): Y =190 and SDy=60

Correlation:
R=0.8

Assume
X and Y are approximately normally distributed.

A)
For a car that is nine (9) years old, what
annual maint./repair cost is predicted?

B)
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C)
What is the regression equation for predicting the annual
maintenance/repair cost given age of the car?


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