Let be independent random variables where N has a Poisson distribution with mean 3 while each has a Poisson distribution with mean 7.

Determine and also the variance of

Any help or hints would be most appreciated. Thanks.

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- Mar 27th 2009, 10:42 AMLenStatistics
Let be independent random variables where N has a Poisson distribution with mean 3 while each has a Poisson distribution with mean 7.

Determine and also the variance of

Any help or hints would be most appreciated. Thanks. - Mar 27th 2009, 07:07 PMmr fantastic
Read this thread: http://www.mathhelpforum.com/math-he...pectation.html

Also this one: http://www.mathhelpforum.com/math-he...variables.html