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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. X 1 2 3

On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below. X 1 2 3 5 Total P(X) . 06 .35 .27 .20 .11 . 01 1.00 (a) Calculate the mean and standard deviation. (Round your mean value to 2 decimal places and standard deviation to 3 decimal places.) Mean Standard deviation

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