9. Mutual funds mix different types of investments which altersperformance. Use the tab titledBESTFUNDS1 to determine if there is adifference between the one-year and three-year annualized returnfor the 20 mutual funds shown in the file. (a) Identify which typeof test is most appropriate for you to use, justify your answer.(b) Determine whether or not the mean return differs for the twoinvestment horizons (use α = .05). (c) Make sure to interpret theresults for real-world use (i.e., explain what the test allows youto conclude about the mutual funds). (3 points)
| Mutual Fund | One-Year return | Three-Year Return |
| MutualFund 1 | 2.4 | 4.5 |
| MutualFund 2 | 2.5 | 3.5 |
| MutualFund 3 | 7.4 | 7.4 |
| MutualFund 4 | 15.9 | 5.3 |
| MutualFund 5 | 7.0 | 19.2 |
| MutualFund 6 | 18.2 | 14.3 |
| MutualFund 7 | 18.0 | 26.7 |
| MutualFund 8 | 5.2 | 22.8 |
| MutualFund 9 | 17.2 | 9.6 |
| MutualFund 10 | 18.7 | 9.3 |
| MutualFund 11 | 9.8 | 20.3 |
| MutualFund 12 | 17.7 | 27.6 |
| MutualFund 13 | 12.1 | 19.3 |
| MutualFund 14 | 11.2 | 21.6 |
| MutualFund 15 | 4.0 | 8.0 |
| MutualFund 16 | 21.6 | 11.7 |
| MutualFund 17 | 6.5 | 8.2 |
| MutualFund 18 | 7.0 | 13.9 |
| MutualFund 19 | 10.4 | 10.8 |
| MutualFund 20 | 4.1 | 17.6 |
