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5.1 Suppose a researcher, using data on class size (CS) and average test scores from 50 third-grade classes, estimates the OLS regression A TestScore =

5.1 Suppose a researcher, using data on class size (CS) and average test scores from 50 third-grade classes, estimates the OLS regression A TestScore = 640.3 4.93 X CS,R2 = 0.11, SER = 8.7. (23.5) (2.02) 3. Construct a 95% confidence interval for BI, the regression slope coefficient. (1. Construct a 90% confidence interval for 30

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