If a test that has reliability r is lengthened by a factor n (n ≥ 1), the reliability R of the new test is given by If the

Question

If a test that has reliability r is lengthened by a factor n (n ≥ 1), the reliability R of the new test is given by
If the reliability is r = 0.6, the equation becomes
(b) Find R(2); that is, find R when the test length is doubled.
(c) What percent improvement is there in the reliability when the test length is doubled?

Kunduz · Accepted Answer

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