For the equation y = 2 + 0.28X1 + 43.8X2:
What is the intercept of the line?
Is this equation a straight or curvilinear line, and why? Straight?
Is this the equation for a simple linear equation or a multiple linear equation?
What are the two regression coefficients?
If the statistical t-value for the second regression coefficient is 9.80, is the coefficient statistically valid at the 95% confidence level? Why or why not?