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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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