In a European country, 20% of the families have three children, 30% have two children, 40% have one child, and 10%
have no children. On average, how many children are there to a family? Please show…Statistics and Probability
In a European country, 20% of the families have three children, 30% have two children, 40% have one child, and 10%
have no children. On average, how many children are there to a family? Please show…Statistics and Probability