1. I have computed an analysis of variance for three groups with 10 observations per group. The degrees of freedom for the F test are

A. 3 and 30.
B. 2 and 10.
C. 2 and 27.

2. I have computed an Analysis of Variance F test and obtained a p-value, p = 0.001. This means

A. all the groups have the same mean.
B. all the group means are different.
C. some of the group means differ from the others.

3. An ANOVA F test is an extension of a

A. two-sample t test.
B. two-sample z test.
C. two-sample test of proportions.

4. One reason we use the Bonferroni method for multiple comparisons is that

A. as we perform more comparisons, the family-wise rate increases.
B. the individual comparisons are not independent.
C. Neither choice is correct.