A multiple regression analysis produced the following tables.

PredictorCoefficients

Standard Error

tStatistic

p-value

Intercept624.536978.497127.9561766.88E-06x18.5691221.6522555.1863190.000301x24.7365150.6991946.7742483.06E-05

Sourcedf

SS

MS

F

p-value

Regression21660914830457.158.319561.4E-06Residual11156637.514239.77Total131817552

These results indicate that ____________.

x2is the only predictor variable significant at the 5% level

each predictor variable is significant at the 5% level

none of the predictor variables are significant at the 5% level

x1is the only predictor variable significant at the 5% level

the intercept is not significant at 5% level