92. If X is a negative binomial rv, then YrX is the total number of trials necessary
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92. If X is a negative binomial rv, then YrX is the total number of trials necessary to obtain r S s. Obtain the mgf of Y and then its mean value and variance.
Are the mean and variance intuitively consistent with the expressions for E(X) and V(X)? Explain.
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Related Book For 
Modern Mathematical Statistics With Applications
ISBN: 9780534404734
1st Edition
Authors: Jay L Devore
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