Suppose that for a given least-squares regression, the sum of squares

1. Suppose that for a given least-squares regression, the sum of squares for error is 60 and the sum of squares for regression is 75. Find the coefficient of determination.
Coefficient of Determination r2 =

2.In testing the hypothesis:
H0:β1=0

Ha:β1≠0

the following statistics are available:

n=128,b0=−1.69,b1=4.38,SEb1=2.7,yˆ=8

Determine the value of the test statistic.

Test Statistic =