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    Number of Incoming Phone Calls at a Company Switchboard

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    The number of incoming phone calls at a company switchboard during 1-minute intervals is believed to have a Poisson distribution. Use a=.10 and the following data to test the assumption that the incoming phone calls follow a Poisson distribution.

    # of Incoming Phone Calls During a 1-min Interval Observed Frequency
    0 15
    1 31
    2 20
    3 15
    4 13
    5 4
    6 2
    Total 100

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    Solution Preview

    Given that, the number of incoming phone calls at a company switchboard during 1-minute intervals is believed to have a Poisson distribution.

    Assumption: The incoming phone calls follow Poisson distribution

    Mean=(∑fx)/N [where f is the observed frequency, x is the number of incoming phone calls during ...

    Solution Summary

    The number of incoming calls to a phone company's switchboard during 1-minute intervals is examined under a Poisson distribution. This Poisson distribution is analyzed in the solution.

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