Let X1 and X2 have independent distributions b(n1, p) and b(n2, p). Find the mgf of Y

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Let X1 and X2 have independent distributions b(n1, p) and b(n2, p). Find the mgf of Y = X1 + X2. How is Y distributed?
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Probability and Statistical Inference

ISBN: 978-0321923271

9th edition

Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman

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