Final answer:
The effective semiannual return is 7.15%, the effective quarterly return is 3.575%, and the effective monthly return is 1.1917%.
Step-by-step explanation:
To find the effective semiannual return, we need to divide the annual rate by 2, since there are two semiannual periods in a year. So the effective semiannual return would be 14.3% / 2 = 7.15%.
Similarly, to find the effective quarterly return, we divide the annual rate by 4, since there are four quarterly periods in a year. Therefore, the effective quarterly return would be 14.3% / 4 = 3.575%.
To find the effective monthly return, we divide the annual rate by 12, since there are twelve monthly periods in a year. Hence, the effective monthly return would be 14.3% / 12 = 1.1917%.