In: Statistics and Probability
            Blair & Rosen, Inc. (B&R) is a brokerage firm that
specializes in investment portfolios designed to...
                
            Blair & Rosen, Inc. (B&R) is a brokerage firm that
specializes in investment portfolios designed to meet the specific
risk tolerances of its clients. A client who contacted B&R this
past week has a maximum of $55,000 to invest. B&R's investment
advisor decides to recommend a portfolio consisting of two
investment funds: an Internet fund and a Blue Chip fund. The
Internet fund has a projected annual return of 11%, while the Blue
Chip fund has a projected annual return of 7%. The investment
advisor requires that at most $25,000 of the client's funds should
be invested in the Internet fund. B&R services include a risk
rating for each investment alternative. The Internet fund, which is
the more risky of the two investment alternatives, has a risk
rating of 6 per thousand dollars invested. The Blue Chip fund has a
risk rating of 4 per thousand dollars invested. For example, if
$10,000 is invested in each of the two investment funds, B&R's
risk rating for the portfolio would be 6(10) + 4(10) = 100.
Finally, B&R developed a questionnaire to measure each client's
risk tolerance. Based on the responses, each client is classified
as a conservative, moderate, or aggressive investor. Suppose that
the questionnaire results classified the current client as a
moderate investor. B&R recommends that a client who is a
moderate investor limit his or her portfolio to a maximum risk
rating of 230.
| (a) | 
Formulate a linear programming model to find the best
investment strategy for this client. | 
 | 
| Let I | 
= Internet fund investment in thousands | 
 
| B | 
= Blue Chip fund investment in thousands | 
 
 
 | 
 | 
If required, round your answers to two decimal places. If an
amount is zero, enter “0”. If the constant is "1" it must be
entered in the box. | 
 | 
| - Select your answer -MaxMinItem 1 | 
I | 
+ | 
B | 
 | 
 | 
 | 
 
| s.t. | 
 | 
 | 
 | 
 | 
 | 
 | 
 
 | 
? I | 
+ | 
? B | 
= | 
? | 
Available investment funds | 
 
 | 
? I | 
+ | 
? B | 
= | 
? | 
Maximum investment in the internet fund | 
 
 | 
? I | 
+ | 
?B | 
= | 
? | 
Maximum risk for a moderate investor | 
 
 | 
 | 
 | 
I, B | 
= | 
 | 
 | 
 
 
 | 
 | 
 | 
| (b) | 
Build a spreadsheet model and solve the problem using Solver.
What is the recommended investment portfolio for this client? | 
 | 
| Internet Fund | 
= | 
 | 
 
| Blue Chip Fund | 
= | 
 | 
 
 
 | 
 | 
 | 
 | 
What is the annual return for the portfolio? | 
 | 
$ | 
 | 
 | 
| (c) | 
Suppose that a second client with $55,000 to invest has been
classified as an aggressive investor. B&R recommends that the
maximum portfolio risk rating for an aggressive investor is 350.
What is the recommended investment portfolio for this aggressive
investor? | 
 | 
| Internet Fund | 
= | 
 | 
 
| Blue Chip Fund | 
= | 
 | 
 
| Annual Return | 
= | 
 | 
 
 
 | 
 | 
 | 
| (d) | 
Suppose that a third client with $55,000 to invest has been
classified as a conservative investor. B&R recommends that the
maximum portfolio risk rating for a conservative investor is 170.
Develop the recommended investment portfolio for the conservative
investor. If an amount is zero, enter “0”. | 
 | 
| Internet Fund | 
= | 
$ | 
 
| Blue Chip Fund | 
= | 
$ | 
 
| Annual Return | 
= | 
$ | 
 
 
 |