For Exercises 17 and 18, test whether the population medians differ, using level of significance . The data represent two independent random samples.
18.
| Sample 1 | 71 | 73 | 59 | 61 | 68 | 51 | 60 | 56 | 59 | 66 | 67 |
| 70 | 62 | ||||||||||
| Sample 2 | 59 | 69 | 68 | 74 | 62 | 64 | 60 | 74 | 50 | 67 | 54 |
| 74 | 73 | 52 |