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D.) Suppose X1 and X2 are independent exp. random variables, each with mean data and y=X1 and X2. What is the moment generating function for the random variable y?

Which choice below is right:

1.) My = (1-t/beta)^-2

2.) My = (1-t/beta)^2

3.) My = (1-beta*t)^-2

4.) My = (1-beta*t)^2

E.) Let X1 and X2 be two different random variables with Poissan's dist. with parameters mew(subscript1)=2 and mew(subscript 2)=3, respectively. Let random variable Y1=X1 +X2. The probability that X1 = 5 is:

1.) 0.0006

2.) 0.1755

3.) 0.0141

4.) 0.1606

https://brainmass.com/statistics/probability/moment-generating-function-poissans-dist-33514

#### Solution Preview

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Statistics, All Topics
Year 1
Moment generating function and Poissan's Dist.
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Two different problems with multiple choice answers

D.) Suppose X1 and X2 are independent exp. random variables, each with mean beta and y=X1 and X2. What is the moment generating function for the random variable ...

#### Solution Summary

The moment generating functions and Poissan's distribution are determined. The random variables are determined.

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