Suppose that a researcher, using data on class size (CS) and average test scores from 95 thirdgrade classes, estimates the OLS regression A TesiScore = 525.604 + ( - 5.8782) X CS, R2 = 0.10, SER = 11.6. A classroom has 22 students. The regression's prediction for that classroom's average test score is 396.28 . (Round your response to two decimal places.) Last year a classroom had 19 students, and this year it has 23 students. The regression's prediction for the change in the classroom average test score is 23.51 . (Round yourresponse to two decimal places.) The sample average class size across the 95 classrooms is 21.61. The sample average of the test scores across the 95 classrooms is D. (Hint: Review the formulas for the OLS estimators.) (Round your response to two decimal places.) The sample standard deviation of test scores across the 95 classrooms is :l. (Hint: Review the formulas for the R2 and SER.) (Round your response to one decimal place