When Analyzing Data from Experiments That Involve More Than Two

When analyzing data from experiments that involve more than two groups _________.

A) doing t tests on all possible pairs of means decreases the probability of making Type I errors
B) doing t tests on all possible pairs of means increases the probability of making Type I errors
C) it is generally permissible to do t tests between all possible pairs of means and use Student's t distribution
D) doing t tests on all possible pairs of means increases the probability of making Type II errors

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