Traffic Accidents The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. X 0 1 2 3 4 PX 0.3 0.2 0.1 0.1 0.3 Find the mean. Round your answer to one decimal place as needed. Mean: μ=   Find the variance.

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