Question: Suppose I would like to be VERY certain a value doesn't come from a null data set. What might I do with my chosen cutoff

Suppose I would like to be VERY certain a value doesn't come from a null data set. What might I do with my chosen cutoff value for standard deviations? a. move it further from the mean b. there is no way to change the cutoff value c. none of the answers are correct d. move it closer to the mean

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