Find the mean of the given probability distribution. The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate office. Its probability distribution is as follows. Probability of Houses Sold in a Single Month at Sendsom's Real Estate 3.60 O 3.50 Houses Sold (x) Probability P(x) 012 0.24 0.01 0.12 3 0.16 4569 7 0.01 0.14 0.11 0.21