Below is a regression using X = average price, Y = units sold, n = 20 stores.
(a) Write the fitted regression equation.
(b) Write the formula for each t statistic and verify the t statistics shown below.
(c) State the degrees of freedom for the t tests and find the two-tail critical value for t by using Appendix D.
(d) Use Excel's function = T.DIST.2T (t, d.f.) to verify the p-value shown for each t statistic (slope, intercept).
(e) Verify that F = t2 for the slope.
(f) In your own words, describe the t of this regression.