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    Mean, Standard Deviation, Shape of Distribution

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    On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below. (a) Calculate the mean and standard deviation. (b) Describe the shape of this distribution.
    x 0 1 2 3 4 5 Total
    P(x) .05 .30 .25 .20 .15 .05 1.00

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    This solution provides graphs and calculations for mean, standard deviation, and distribution.

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