Using RStatistical application or manual calculations answer

Using R-Statistical application or manual calculations, answer the following problem.

An educator examined the relationship between the number of hours devoted to reading each week (Y) and the independent variables social class (X_1), number of years of school completed (X_2), and reading speed (X_3), in pages read per hour. The following A NOVA table was obtained from a stepwise regression analysis on data for a sample of 19 women over 60. Test for the significance of each independent variable as it enters the model. Note as given in the above table, the order of the variables entering the model would be X_3, X_2, X_1. Test H_0 : beta_1 = beta_2 = 0 in the model Y = beta_0 + beta_1 X_1 + beta_2 X_2 + beta_3 X_3 + Why can\'t we test H_0 : beta_1 = beta_3 = 0 by using the given A NOVA table? Based on your results in parts (a) and (b), what is the best model to use?

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