Review for Test #3: Ch. 6, 7, 8 Use the following information for #1-4. Round to two decimals. In an Italian cafe, the following probability distribution was obtained. The random variable x represents the number of toppings for a large pizza. X P(x ) 0 0.30 1 0.40 2 0.20 3 0.06 4 0.04 1. What is the probability that a randomly selected customer chose 3 toppings for their pizza? 2. What is the probability that a randomly selected customer chose less than 3 toppings for their pizza? 3. Would it be unusual for a randomly selected customer to choose 4 toppings for their pizza? Why or why not? 4. Calculate and interpret the mean of the random variable x. 5. Calculate the standard deviation of the random variable x