Provide an appropriate response. 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) 0 0.30 1 0.40 2 0.20 3 0.06 4 0.04 mean: 1.54; standard deviation: 1.30 mean: 1.14; standard deviation: 1.04 mean: 1.30; standard deviation: 1.54 O mean: 1.30; standard deviation: 2.38