An accident study shows that a month may be considered as high, medium, or low accidents month with probabilities 0.2,0.3 and 0.6 respectively. The number
An accident study shows that a month may be considered as high, medium, or low accidents month with probabilities 0.2,0.3 and 0.6 respectively. The number of accidents follow Poisson distributions with means 20, 15 and 10 respectively.
The variance of the number of accidents is :-
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Authors: John J. Coyle, Robert A. Novak, Brian Gibson, Edward J. Bard
8th edition
9781305445352, 1133592961, 130544535X, 978-1133592969
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