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- > psychometric::CIr(.3, 200)
- [1] 0.17 0.42
- > sqrt((1-.3^2)/(200-2))
- [1] 0.068
- > .3 - 1.96 * 0.068
- [1] 0.17
- > .3 + 1.96 * 0.068
- [1] 0.43
- > psychometric::CIr(.9, 20)
- [1] 0.76 0.96
- > sqrt((1-.9^2)/(20-2))
- [1] 0.1
- > .9 + 1.96 * 0.1
- [1] 1.1
- > .9 - 1.96 * 0.1
- [1] 0.7
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