It is estimated that 28% of all adults in the United States invest in stocks and that 83% of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 24% of U.S. adults have investments in both stocks and fixed income instruments. Answer the questions below. (a) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? Round your answer to 2 decimal places. (b) What is the probability that a randomly chosen stock investor also invests in fixed income instruments? Round your answer to 2 decimal places.