Question 7 1 Point What would happen if instead of using an ANOVA to compare 10 groups, you performed multiple t-tests? Nothing serious, except that making multiple comparisons with a t-test requires more computation than doing a single A ANOVA. B Nothing there is no difference between using an ANOVA and using a t-test. C Making multiple comparisons with a t-test decreases the probability of making a Type II error. D Making multiple comparisons with a t-test increases the probability of making a Type | error. Question 8 1 Point An investigator randomly assigns 30 college students into three equal size study groups (early morning afternoon, late-night) to determine if the period of the day at which people study has an effect on their retention. The students live in a controlled environment for one week, on the third day of the experimental treatment is administered (study of predetermined material). On the seventh day the investigator tests for retention. In computing the ANOVA table, the investgator sees that the MS within groups is larger than his MS between groups. What does this result indicate? There was more variability between subjects within the same group than there was between groups. B There was more than the expected amount of variability between groups. C An error in the calculations was made. D There should have been additional controls in the experiment