statistics economic

The below is the regression output that explains sales in terms of price and advert. The regression is linear where sales = b1+ b2*price + b3"advert. Use alpha = 0.05, critical t-value = 1.99, n = 75. Coefficients: Estimate Std. Error Intercept) 118.91 6.35 price -7.91 1.10 advert 1.86 0.68 Is the constant coefficient significant