Given the following regression analysis output.

a. What is the sample size?
b. How many independent variables are in the study?
c. Determine the coefficient of determination.
d. Conduct a global test of hypothesis. Can you conclude at least one of the independent variables does not equal zero? Use the .01 significance level.
e. Conduct an individual test of hypothesis on each of the independent variables. Would you consider dropping any of the independent variables? If so, which variable or variables would you drop? Use the .01 significance level.

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ANOVA Table Source df MS F p-value Regression 227.0928 4 56.7732 9.27 0.000 Residual 153.0739 25 6.1230 Total 380.1667 29 Regresslon Output t (df = 25) p-value Varlables Coefficlents Standard Error Intercept 68.3366 8.9752 7.614 0.000 X, 0.8595 0.3087 2.784 0.010 -0.3380 0.8381 -0.403 0.690 -0.8179 0.2749 -2.975 0.006 -0.5824 0.2541 -2.292 0.030