Answer: ŷ = 433.2804 - 37.6455x
Solution:
The regression line is given as below:
ŷ = a + bx
Where, we have
b = r*Sy/Sx
a = Ybar – b*Xbar
So, by using given information, we have
b = r*Sy/Sx
b = -0.82*101/2.2
b = -37.6455
a = Ybar – b*Xbar
a = 102 - (-37.6455)*8.8
a = 433.2804
ŷ = a + bx
ŷ = 433.2804 - 37.6455x
Answer: ŷ = 433.2804 - 37.6455x
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