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)T(n/2)o/T((n – 1)/2)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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When the sample standard deviation S is based on a random sample from a normal population distribution, it can be shown that
E(S) = V/2/(n – 1)T(n/2)o/T((n – 1)/2)
Use this to obtain an unbiased estimator for o of the form cS. What is c when n = 18? (Round your answer to four decimal places.)
Transcribed Image Text:When the sample standard deviation S is based on a random sample from a normal population distribution, it can be shown that E(S) = V/2/(n – 1)T(n/2)o/T((n – 1)/2) Use this to obtain an unbiased estimator for o of the form cS. What is c when n = 18? (Round your answer to four decimal places.)
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