Based on the two regression models shown below, do the following:

(a) Statistically compare Model 1 and Model 2 using the Chow test (use a cutoff of F = 2.22 for a signifi cant test at alpha = 0.05). Be sure to list the null and alternative hypotheses for the test.

(b) Write the prediction equation based on Model 2. You may round all coeffi cients to two nonzero decimal places (e.g., round 0.00034561 to 0.00035).

(c) Based on the prediction equation that you wrote out in Question 11.5b, write the conditional regression equations for married and unmarried persons based on Model 2. You may round all coeffi cients to two nonzero decimal places (e.g., round 0.00034561 to 0.00035).

(d) Based on the results of Model 2, which coeffi cients in the conditional equations you wrote in Question 11.5c differ signifi cantly for married versus unmarried persons? Justify your response by writing the relevant t-values and/or p-values (use a cutoff alpha of 0.05). Be sure to consider the intercept as well as the four predictor variables.