A package of 8 frankfurters costs $5.00 and a package of 12 hot dog buns costs $3.00. If Jeffrey makes a hot dog sandwich using only a frankfurter and a bun, what percent of the cost of his hot dog sandwich comes from the bun?

Consider the following information on stocks a, b, c and their returns (in decimals) in each state: state prob. of state a b c boom 20% 0.27 0.22 0.16 good 45% 0.16 0.09 0.07 poor 25% 0.03 0 0.03 bust 10% -0.08 -0.04 -0.02 if your portfolio is invested 25% in a, 40% in b, and 35% in c, what is the standard deviation of the portfolio in percent? answer to two decimals, carry intermediate calcs. to at least four decimals.