Suppose that a researcher, using data on class size (CS)

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Suppose that a researcher, using data on class size (CS) and average test scores from 50 third-grade classes, estimates

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Suppose that a researcher, using data on class size (CS) and average test scores from 50 third-grade classes, estimates the OLS regression TestScore = 640.3 - 4.93 * CS, R2 = 0.11, SER = 8.7. (23.5) (2.02) a. Construct a 95% confidence interval for b1, the regression slope coefficient. b. Calculate the p-value for the two-sided test of the null hypothesis H0 : b1 = 0. Do you reject the null hypothesis (i) at the 5% level (ii) at the 1% level? c. Calculate the p-value for the two-sided test of the null hypothesis H0 : b1 = -5.0. Without doing any additional calculations, determine whether -5.0 is contained in the 95% confidence interval for b1. d. Construct a 90% confidence interval for b0.

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