Question: I am having difficulty with the standard deviation. I got the means correct (1.96) On the midnight shift, the number of patients with head trauma

I am having difficulty with the standard deviation. I got the means correct (1.96)

On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below.

x 0 1 2 3 4 5 TOTAL

P(x) .07 .36 .27 .17 .10 .03 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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