The following table contains the probability distribution for the number of traffic accidents daily in a small town: Number of Accidents Daily (X) P(X-x)P(X=xi) 0.10 0.20 0.45 3. 0.15 4 0.05 0.05 a. Compute the mean number of accidents per day. b. Compute the standard deviation. 1. 2. 田

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