Working Mothers in Canada

Short Answer

Working mothers in Canada
Statistics Canada wanted to find the distribution of ages of working women living in Canada who were single mothers. The researcher drew a random sample of some 300 families from the government tax records and found the following distribution:
Age Group One family was selected at random from tax base records of families with working mothers.
-Refer to Working mothers in Canada. What is the probability that the randomly selected working mother is married?