To determine whether the test statistic of ANOVA is statistically significant, it can be compared to a critical value. What two pieces of information are needed to determine the critical value? expected frequency, obtained frequency B sample size for each group, number of groups C MSB, MSW D mean, sample standard deviation Question 10 1 Point A study on the effects of marijuana use on memory recall was conducted on light- and heavy-using college students. 64 heavy-users were tested and had an average memory recall of 51.3 with a standard deviation of 4.5. 64 light-users were tested and found to have an average memory recall of 53.3 with a standard deviation of 3.6. What is the F statistic used to test the claim that the population of heavy- users has a variance different from that of the light- users? A 1.25 B 1.04 C 1.08 D 1.56