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Large Sample Chi Square Test for RR in Cohort Studies. =. Should be significant because :. Z. But there is a problem here:. 1 Sided H A. Large values of a chi square statistic that might indicate a significant result can occur from either large positive or
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But there is a problem here: 1 Sided HA Large values of a chi square statistic that might indicate a significant result can occur from either large positive or large negative values of the normal statistic.
Another way to compute P value: Divide the area in the right tail of the chi square distribution in half.