Under what circumstances are post hoc tests necessary? * accept the null hypothesis with k > 2 O reject the null hypothesis with k > 2 O reject the null hypothesis with k 2 accept null hypothesis with k = 2 Reading this statement: "For k/N-k, i.e., 5/50-5 df, the critical value at a.05a is 4.04." How many treatment conditions were compared in the study? O 5 O 50 O 45 4.04

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