Your consulting firm specializes in work measurement studies, and you have just been given a dream assignment. You are to fly to Singapore next week and conduct a study of the Ferrari Formula One team in action. Specifically, you are to observe and offer improvements of the pit stops. Once you get to the pit area, you start taking measurements. Your first step is to record the present pit stop method, so you record the process and times; Car stops, car lifted, lug nut off, wheel off, new wheel on, lug nut on, car dropped and finally released. All is about 2 seconds. After you have had some time to analysis the pit stop you propose an improvement on a second chart and present it to the team to use in future pit stops. What type of methods analysis chart did you produce?

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.