For four means, it is planned to construct Tukey 95% multiple comparison confidence intervals for the differences between the six pairs.

a. For each confidence interval, there is a 0.95 chance that the interval will contain the true difference.
b. The probability that all six confidence intervals will contain the true differences is 0.70.
c. The probability that all six confidence intervals will contain the true differences is about 0.95.
d. The probability that all six confidence intervals will contain the true differences is (0.95)⁶.