Consider the probability distribution for number of children in local families. Probability Distribution X P(x) O 0.39 0.19 2 0.03 3 0.29 4 0.10 1. Find the mean number of children in local families [ Select ] 2. Find the standard deviation of the number of children in local families [ Select ] 3. Would 4 children be considered a significantly high number of children? [ Select ]