Suppose that a researcher, using data on class size (CS) and average test scores from

96 third-grade classes, estimates the OLS regression Modifying Above TestScore with caret equals 536.012 plus left parenthesis negative 5.9946 right parenthesis times CS comma Upper R squared equals 0.10 comma SER equals 11.8.

A classroom has 20 students. The regression's prediction for that classroom's average test score is ?

(Round your response to two decimal places.)

Last year a classroom had 17 students, and this year it has 21 students.

The regression's prediction for the change in the classroom average test score is ?

The sample average class size across the 96 classrooms is 22.04.

The sample average of the test scores across the 96 classrooms is ?

(Hint:Review the formulas for the OLS estimators.)

The sample standard deviation of test scores across the

96 classrooms is ?

(Hint:

Review the formulas for the Upper R squared and SER.)