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Barbara is testing the IQs of people who live in Irvine and people who live in...

Barbara is testing the IQs of people who live in Irvine and people who live in Newport Beach. She wants to see if there is a difference between them. (Personally, she believes that Irvinites are the smarter of the two.) She is using the convention for a medium effect size. She has 70 Irvinites and 30 Newport Beachers. How powerful is her test? Round you delta to the closest one on the table.

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For mediom size effect, d = 0.5 deHa O.SX 70 x 30 70+30 2100 0.5 X 2.3 2.29128 Cohenis d Commenusd Size effect statistic) whe

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