Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 0 1 2 3 4 5 Probability 0.624 0.234 0.093 0.025 0.014 0.009 . . . (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution. H = (Round to one decimal place as needed.)