The study of recent college graduates described in Exercise 33 found that among those who had graduated with debts from student loans, 33% had sold possessions since graduating. Among those who had graduated free of debt, only 17% had sold possessions since graduating.
(a) Express these two percentages as conditional probabilities, including a description of the relevant sample space.
(b) What do you need to know in order to determine the proportion of recent college graduates who sold possessions after college?