Use expected value calculation method to find the following:
In a European country, 20.0% of the families have 3.0 children, 40.0% have 2.0 children, 30.0% have 1.0 child, and 10.0% have 0.0 children. On average, how many children are there to a family?
Enter answer as a number rounded to the nearest tenth (one place after decimal). Examples of correctly entered responses:
3.4 0.0 10.0 77.5 100.0
Your Answer: