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 = 6sb3 = 7SST = 4900SSE = 1296?
At the 5% level, the coefficient of x1
A. is significant.
B. is not found to be significant.
C. cannot be tested, because not enough information is provided.
D. should be estimated again, because it is incorrect in the above equation.
Answer: A
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