Which one of the following statements is correct concerning a portfolio of 20 securities
with multiple states of the economy when both the securities and the economic states
have unequal weights?
A. Given the unequal weights of both the securities and the economic states, the
standard deviation of the portfolio must equal that of the overall market.
B. The weights of the individual securities have no effect on the expected return of a
portfolio when multiple states of the economy are involved.
C. Changing the probabilities of occurrence for the various economic states will not
affect the expected standard deviation of the portfolio.
D. The standard deviation of the portfolio will be greater than the highest standard
deviation of any single security in the portfolio given that the individual securities are
well diversified.
E. Given both the unequal weights of the securities and the economic states, an investor
might be able to create a portfolio that has an expected standard deviation of zero.
Answer:
Peterson’s Antiquities currently has a 31 day cash cycle. Assume the firm changes its
operations such that it decreases its receivables period by 2 days, decreases its
inventory period by 3 days, and decreases its payables period by 4 days. What will the
length of the cash cycle be after these changes?
A. 22 days
B. 23 days