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    Calculating Averages and Probability

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    If customers arrive at a single drive-in window at a local bank one every four minutes on the average, and if you can serve a customer in three minutes on the average:

    a. How long should customers expect to be at the bank facility on the average?
    b. How many cars would we expect to be in the drive-in facility on the average?
    c. What is the probability that four or more cars will be in the drive-in facility?

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    https://brainmass.com/business/business-math/calculating-averages-probability-414862

    Solution Preview

    If customers arrive at a single drive-in window at a local bank one every four minutes on the average, and if you can serve a customer in three minutes on the average:

    Arrival rate = ...

    Solution Summary

    This solution is comprised of a step by step response which provides computations for average calculations based on time and number, and a probability calculation. All required formulas are provided.

    $2.19

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