When designing a norm-referenced test, researchers will favor items that are answered correctly by roughly what percentage of examinees in tryouts of the test?

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In designing a norm-referenced test, researchers aim for items that are answered correctly by roughly 50% of examinees during tryouts. This ensures a good spread of difficulty across items, allowing for effective discrimination between higher and lower ability examinees.

When Designing a Norm-Referenced Test, Researchers Will Favor Items That