Question: 9. The t- distribution for developing a confidence interval for a mean has degrees of freedom. A.n - 1 B.n C.n - 2 D.n+1

9. The t- distribution for developing a confidence interval for a

9. The t- distribution for developing a confidence interval for a mean has degrees of freedom. A.n - 1 B.n C.n - 2 D.n+1

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