4 5 8 7 5 6 7 3 5 6
6 7 9 7 7 7 9 5 4 7
8 9 10 9 9 7 10 6 7 9
9 9 10 10 8 9 11 7 7 10
Bonferonni adjustments are necessary when making the multiple comparisons because they keep the type I error rate from being inflated.

True. the Bonferonni adjustment is designed to keep alpha the same level by reducing the the critical value for any each comparison. If each comparison had a critical value of .05 then the chance of making one or more type 1 errors would be higer than 0.05. The Bonferonni adjustment corrects for this.
true
True
false
False
You plan to test all pairwise comparisons among 4 means. What is the critical value after a Bonferonni adjustment needed to maintain an experiment-wise type 1 error rate of .05?

6 comparisons .05/6 = 0.00833
0.0083
0.0005
Calculate t for the comparison of CA to CB (subtract the mean of CB from the mean of CA.)

0
3.67
0.01
Calculate p for the comparison of CC to CD.

0
.051
0.001