In a pizza takeout restaurant, the following probability distribution was obtained. The random variable x represents the number of toppings for a large pizza. Find the mean and standard deviation. x P(x) 00.30 10.40 2 0.20 30.06 4 0.04 O mean: 1.30; standard deviation: 1.54 O mean: 1.14; standard deviation: 1.04 mean: 1.54; standard deviation: 1.30 mean: 1.30; standard deviation: 2.38 13

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