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Relationship of PUVA treatment to incidence of melanoma
Observed Expected
<250 treatments 5 3.7
>250 treatments 6 1.1

Suppose we want to compare the observed and expected number of events among the group <250 treatments. Perform an appropriate significance test, report a two-tailed p-value and then provide a 95% CI for the expected number of events in the group with >250 treatments.

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Category:- Statistics and Probability
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