A study of 427 college students was conducted to test whether high school GPA is

Question

A study of 427 college students was conducted to test whether high school GPA is a predictor of first-year college GPA. Students with higher High school GPA are expected to do better in college. colpa = Grade point average in college (Range 0.85 - 3.97) hsgpa = High school GPA (Range 2.29-4.5) Model 1: OLS, N = 427 Dependent variable: colgpa R-squared: 0.854880 a. Write the equation for the least-squares regression line: y = + x b. The null hypothesis is: c. Calculate the t-ratio = d. The critical value for the t distribution (alpha = 0.05 and df = N-2) is e. Can we reject the null hypothesis?

Explanation / Answer

We can Reject the null hypothesis H0 -

If t-ratio > critical value of t

And if t-ratio < critical value of t ,   Do not Reject the null hypothesis.

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