The accompanying table shows the regression results when estimating y = ?0 + ?1x1 + ?2x2 + ?3x3 + ?. dfSSMSFRegression34531515.03Residual852,52130 Total882,974 CoefficientsStandard Errort-statp-valueIntercept14.963.084.860.0000x10.870.293.000.0035x20.460.222.090.0400x30.040.340.120.9066When testing whether or not x1 and x2 have the same influence on y, the null hypothesis is ________.
A. H0: ?1 + ?2 = ?3
B. H0: ?1 + ?2 = 0
C. H0: ?1 = ?2
D. H0: ?1 ? ?2
Answer: C
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