On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below. X P(x) 0 -.05 1 .30 2 .25 3 .20 4 .15 5 Total .05 1.00 Describe the shape of the distribution. uniform skewed left skewed right symmetric
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To calculate the mean, we multiply each value of X by its corresponding probability and sum them up. Mean = (0 * 0.05) + (1 * 0.30) + (2 * 0.25) + (3 * 0.20) + (4 * 0.15) + (5 * 0.05) Mean = 0 + 0.30 + 0.50 + 0.60 + 0.60 + 0.25 Mean = 2.25 Show more…
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