A glucometer is a portable device used to monitor glucose levels in blood. Of concern for users is repeatability between units of the same model, or between different models. The following data [from Edminston, P. L.; Williams, T. R. J. Chem. Educ. 2000, 77, 377-378] gives results for a single sample analyzed using two units of the Encore glucometer manufactured by the Bayer Corporation. Is there any evidence at α = 0.05 that the glucometers give different results?
| [Glucose] (mg/dL) | ||
| Replicate | Glucometer 1 | Glucometer 2 |
| 1 | 121 | 128 |
| 2 | 127 | 133 |
| 3 | 126 | 141 |
| 4 | 118 | 144 |
| 5 | 120 | 140 |
| 6 | 121 | 132 |
