Show the work please

1. Suppose you collected data from 1986 to 2005 to estimate the following demand function:

Q_X = b₀ + b₁ P_X + b₂ P_R + b₃ M

Assume R is a substitute and X is a normal good. The estimation results are reported below:

Dependent Variable: QX
Method: Least Squares
Date: 07/23/06 Time: 11:10
Sample: 1 20
Included observations: 20
Variable	Coefficient	Std. Error	t-Statistic	P-Value
C	19.777074	1.784179	11.0846	0.0000
PX	-13.79169	2.303381	-5.987587	0.0000
PR	5.069939	0.844016	6.006920	0.0000
M	0.257197	0.080063	3.212410	0.0054
R-squared	0.872386	F-statistic		36.45966
Adjusted R-squared	0.848459	P-Value for F-statistic		0.0000

a. Conduct t tests to see if the coefficients are statistically significant at the 5% level of significance. Disregard the intercept. Use the p-values. A simple yes or no is not enough. Explain

b. Conduct an F- test to see if the equation, as a whole, is statistically significant at the 5%. Use the p-value. A simple yes or no is not enough. Explain.