"What are the characteristics of families with young children (under age 6)?" This was one of several questions posed by a University of Michigan researcher in Children and Youth Services Review (Vol. 17. 1995). Using data obtained from the National Child Care Survey,

the income distribution and employment status of these families are summarized in the table below:

a. Find the probability that a randomly selected family with young children has an income above the poverty line, but less than $25,000.

b. Find the probability that a randomly selected family with young children has unemployed parents or no parents.

c. Find the probability that a randomly selected family with young children has an income below the poverty line.