Betty lou has a car washing and detailing business. she charges $20 to wash a car, a process that takes her 20 minutes and requires no or materials. for car detailing, a process requiring 1 hour, she charges $50 net of materials. again, no is required. what do you suggest betty lou do to make the most efficient use of her resources?

Stock a has a beta of 1.2 and a standard deviation of 20%. stock b has a beta of 0.8 and a standard deviation of 25%. portfolio p has $200,000 consisting of $100,000 invested in stock a and $100,000 in stock b. which of the following statements is correct? (assume that the stocks are in equilibrium.) (a) stock b has a higher required rate of return than stock a. (b) portfolio p has a standard deviation of 22.5%. (c) portfolio p has a beta equal to 1.0. (d) more information is needed to determine the portfolio's beta. (e) stock a's returns are less highly correlated with the returns on most other stocks than are b's returns.