In a regression analysis of a first-order model involving 3 predictor variables and 25 observations, the following estimated regression equation was developed.
= 12 - 18x1 + 4x2 + 15x3Also, the following standard errors and the sum of squares were obtained.
sb1 = 3sb2 = 6 sb3 = 7SST = 4900SSE = 1296?
If you want to determine whether or not the coefficients of the independent variables are significant, the critical t value at ? = .01 is
A. 2.080.
B. 2.831.
C. 2.518.
D. 2.807.
Answer: B
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