In: Statistics and Probability
            Blair & Rosen, Inc. (B&R) is a brokerage firm that specializes in investment portfolios designed to meet the specific risk tolerances of its clients
                
            
 
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 $50,000 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 12%, while the Blue Chip fund has a projected annual return of 9%. The investment advisor requires that at most $35,000 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 240.
| (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 the constant is "1" it must be entered in the box. If your answer is zero enter “0”. | 
|   | 
| - Select your answer -MaxMinItem 1 | 
I | 
+ | 
B | 
  | 
  | 
  | 
 
| s.t. | 
  | 
  | 
  | 
  | 
  | 
  | 
 
|   | 
I | 
+ | 
B | 
- Select your answer -≤≥=Item 6 | 
  | 
Available investment funds | 
 
|   | 
I | 
+ | 
B | 
- Select your answer -≤≥=Item 10 | 
  | 
Maximum investment in the internet fund | 
 
|   | 
I | 
+ | 
B | 
- Select your answer -≤≥=Item 14 | 
  | 
Maximum risk for a moderate investor | 
 
|   | 
  | 
  | 
I, B | 
- Select your answer -≤≥=Item 16 | 
  | 
  | 
 
 
 | 
|   | 
  | 
| (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 $50,000 to invest has been classified as an aggressive investor. B&R recommends that the maximum portfolio risk rating for an aggressive investor is 320. What is the recommended investment portfolio for this aggressive investor? | 
|   | 
| Internet Fund | 
= | 
$ | 
 
| Blue Chip Fund | 
= | 
$ | 
 
| Annual Return | 
= | 
$ | 
 
 
 | 
|   | 
  | 
| (d) | 
Suppose that a third client with $50,000 to invest has been classified as a conservative investor. B&R recommends that the maximum portfolio risk rating for a conservative investor is 160. Develop the recommended investment portfolio for the conservative investor. If your answer is zero enter “0”. | 
|   | 
| Internet Fund | 
= | 
$ | 
 
| Blue Chip Fund | 
= | 
$ | 
 
| Annual Return | 
= | 
$ | 
 
 
 |