Question: (Non-Empirical):Suppose a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: =520.45.84 ,2=0.08, =11.5. (20.4)

(Non-Empirical):Suppose a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: =520.45.84 ,2=0.08, =11.5. (20.4) (2.21) a. Construct a 95% confidence interval for 1, the regression slope coefficient. b. Do you reject the two-sided test of the null hypothesis 0: 1=0 at the 5% level? At the 1% level? Explain. c. Consider the two-sided test of null hypothesis 0: 1=5.6, determine whether -5.6 is contained in the 95% confidence interval for 1 d. Construct a 99% confidence interval for 0. e. Do you think that the regression errors are plausibly homoscedastic? Explain

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