In a sandwich shop the following probability distribution was obtained The random variable x represents the number of condiments used for a hamburger Find the mean and standard deviation for the random variable x Round to two decimal places X P x 0 0 30 1 0 40 2 0 20 30 06 4 0 04 A mean 1 30 standard deviation 1 54 B mean 1 30 standard deviation 2 38 C mean 1 14 standard deviation 1 04