A group of studentswish to examine how pesticides affect seedling growth. Seeds arerandomly assigned to be planted in pots with soil treated withpesticide (treatment group, group 1) or in pots with untreated soil(control group, group 2). Seedling growth (in mm) is recorded after2 weeks. The data for each group is given below.
| Pesticide Group (Group 1) | Untreated Group (Group 2) |
| 24 | 71 | 42 | 26 |
| 61 | 49 | 33 | 54 |
| 59 | 54 | 46 | 60 |
| 46 | 43 | 37 | 28 |
| 43 | 53 | 43 | 62 |
| 44 | 57 | 41 | 20 |
| 52 | 49 | 10 | 53 |
| 43 | 56 | 42 | 48 |
| 58 | 33 | 55 | 37 |
| 67 | | 19 | 85 |
| 62 | | 17 | 42 |
| 57 | | 55 | |
Is there evidence thatthe average growth in mm differs between the pesticide anduntreated groups?
What is the value ofthe test statistic?
The p-value?
