Assume that you manage a risky portfolio with an expected rate of return of 20% and a standard deviation of 46%. The T-bill rate is 5%. Your client decides to invest in your risky portfolio a proportion (y) of his total investment budget with the remainder in a T-bill money market fund so that his overall portfolio will have an expected rate of return of 14%. What is the standard deviation of the rate of return on your client's portfolio

The big black bird company (bbc) has a large order for special plastic-lined military uniforms to be used in an urgent military operation. working the normal two shifts of 4040 hours each per week, the bbc production process usually produces 2 comma 6002,600 uniforms per week at a standard cost of $125125 each. 7070 employees work the first shift and 3030 the second. the contract price is $240240 per uniform. because of the urgent need, bbc is authorized to use around-the-clock production six days per week. when each of the two shifts works 7272 hours per week, production increases to 4 comma 2004,200 uniforms per week but at a cost of $160160 each.