The following two excerpts were taken from “Documentation of Structured Analysis for Reviewing Scientifically-Based Research: Instructional Strategies and Programs,” reviewed for NCTM on August 28, 2004. I. A statistically significant main effect was obtained for group only, F (1, 31) = 6.23 p = 0.02 favoring the schema condition. II. No significant differences between the two conditions on test time, F (1, 31) = 1.8 p = 0.19 were found.
a. Verify the p-value stated in I, and explain why they concluded a significant effect. [Note: Use the F(1, 31) distribution,with F = 6.23
b. Verify the p-value stated in II, and explain why they concluded no significant effect.