Construct a probability distribution for the sum shown on the faces when two dice, each with 9 faces, are rolled. Part 1 of 2 V Find the mean. Round your answer to one decimal place as needed. Do not round intermediate steps. Mean: L = 10 Part: 1 / 2 Part 2 of 2 Find the variance and standard deviation. Round your answers to one decimal place as needed. Do not round intermediate steps. Variance: o X 5 Standard deviation: o =