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When the sample standard deviation S is based on a random sample from a normal population...

When the sample standard deviation S is based on a random sample from a normal population distribution, it can be shown that E(S) = 2/(n − 1) Γ(n/2)σ/Γ((n − 1)/2) Use this to obtain an unbiased estimator for σ of the form cS.

What is c when n = 16? (Round your answer to four decimal places.)

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