Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 0 1 2 3 4 5 Probability 0.681 0.203 0.076 0.019 0.014 0.007 (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution. = .5 (Round to one decimal place as needed.) Find the variance of the probability distribution. =(Round to one decimal place as needed.)