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A regression of height (X, in inches) on hourly earnings (Y, in dollars), yields the following results:
n=26
SSR=200
SST=1000
r=.447
SX=3
?Yi=780
?Xi=1872
a. What is the value of ybar?
b. What is the value of b1 in the regression Y=b0+b1X?
c. What is the variance of the regression? That is, what is the value of Se2?
d. What is the predicted hourly earnings for someone 67 inches tall? $25
What is the 99% confidence interval for ?1 (true population slope coefficient).
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