Let X equal the number of alpha particle emissions of carbon-14 that are counted by a Geiger

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Let X equal the number of alpha particle emissions of carbon-14 that are counted by a Geiger counter each second. Assume that the distribution of X is Poisson with mean 16. Let W equal the time in seconds before the seventh count is made.
(a) Give the distribution of W.
(b) Find P(W ≤ 0.5).
Distribution
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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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