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POISSON DISTRIBUTION
 | Mean = m
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| Standard deviation =
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| Using table
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Cumulative Poisson probabilities table gives cumulative probabilities.
| Example:
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Telephones call arrive randomly at a switchboard, one a minute on average. What are
the probabilities that 6 calls will be received in a period of 5 minutes?
| Solution:
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p(6 or fewer random events when m=5) =
p(5 or fewer random events when m=5) =
p(6 random events when m = 5)
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