Final answer:
The expected value of the total return rate for the firm's clients is calculated by taking the weighted average of the returns, resulting in an expected return of 7.4%.
Step-by-step explanation:
To find the expected value of the total return rate for the firm's clients, calculate the weighted average of the returns of investments A, B, and C using the proportions of clients invested in each.
- Multiply the percentage of clients invested in investment A (30%) by its return rate (10%):
0.30 * 0.10 = 0.03 or 3% - Multiply the percentage of clients invested in investment B (50%) by its return rate (6%):
0.50 * 0.06 = 0.03 or 3% - Multiply the percentage of clients invested in investment C (20%) by its return rate (7%):
0.20 * 0.07 = 0.014 or 1.4% - Add the products to find the total expected return:
3% + 3% + 1.4% = 7.4%
Therefore, the expected value of the total return rate for the firm's clients is 7.4%%.