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A teacher gives an quiz to his students that she knows (through repeated administrations in past classes) has a mean of 75. The reliability for

A teacher gives an quiz to his students that she knows (through repeated administrations in past classes) has a mean of 75. The reliability for the test on this particular class administration is .92, and the observed variance for the test is 13.

If a student obtains a score of 80 on the test, what would be their predicted true score? Use R for the calculation

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