At an activity level of 9,300 machine-hours in a month, falks corporation’s total variable production engineering cost is $829,560 and its total fixed production engineering cost is $192,960. what would be the total production engineering cost per machine-hour, both fixed and variable, at an activity level of 9,600 machine-hours in a month? assume that this level of activity is within the relevant range

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.