3. (25pts) Using the same data set as Question 2 above, answer to the following questions. For this question, in addition to the answers, you need to attach the MS Excel file that includes all the analysis results/ output. (a) Run a multiple regression of CourseEval on the six regressors (Beauty, Intro, OneCredit, Female, Minority, and NNEnglish): CourseEvali = a + B1 X Beauty; + 32 x Introi + 83 X OneCrediti +B4 X Femalei + 35 X Minorityi + 36 X NNEnglish; + Wi. Report your estimation results. Comparing with the estimation result in Q.2-(c) above, which regression fits the data better? Explain. (b) From the results in part (a), which regressors do you think should be included in the regression? Explain. [Hint: See the t-tests.] (c) Conduct the F-test on this multiple regression. Interpret your test result