In Order to Determine the Effect of School Size on Subsequent

Multiple Choice

In order to determine the effect of school size on subsequent academic performance, 20 graduating seniors who had gone on to college were chosen from each of four high schools that had graduating classes of 50, 250, 500, and 2000. Mean college grade points were calculated for each high school, $\alpha$ was set at .05, and an ANOVA was run, producing an F = 2.75. From this you can conclude that

A) H₀ should be rejected
B) H₀ should be retained
C) more information is needed in order to decide about the null hypothesis, namely .