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The test-retest method is one way of establishing the reliability of a test. The test is...

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Statistics

The test-retest method is one way of establishing thereliability of a test. The test is administered, and then, at alater date, the same test is re-administered to the sameindividuals. The correlation coefficient is computed between thetwo sets of scores. The following test scores were obtained in atest-retest situation. (Round your answers to two decimalplaces.)

First Score75876075988068844772
Second Score73915376957771815469

(a) Find r.


(b) Set a 95% confidence interval for ρ.

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