Econometric help... Urgent answer for Question 4.9

4.9. The usual two-variable linear model is postulated, and a sample of 20 observations is drawn from an urban area and another sample of 10 observations from a rural area. The sample information in raw form is summarized as follows: Urban 10 XX = 20 20 X'y = 20 25 20 y'y = 30 Rural X'X 10 10 10 20 y'y = 24 Test the hypothesis that the same relationship holds in both urban and rural areas