10.34 Beer and blood alcohol.
How well does the number of beers a student drinks predict his or her blood alcohol content (BAC)? Sixteen student volunteers at Ohio State University drank a randomly assigned number of 12-ounce cans of beer. Thirty minutes later, a police officer measured their BAC.15
bac
Student | Beers | BAC | Student | Beers | BAC |
---|---|---|---|---|---|
1 | 5 | 0.10 | 9 | 3 | 0.02 |
2 | 2 | 0.03 | 10 | 5 | 0.05 |
3 | 9 | 0.19 | 11 | 4 | 0.07 |
4 | 8 | 0.12 | 12 | 6 | 0.10 |
5 | 3 | 0.04 | 13 | 5 | 0.085 |
6 | 7 | 0.095 | 14 | 7 | 0.09 |
7 | 3 | 0.07 | 15 | 1 | 0.01 |
8 | 5 | 0.06 | 16 | 4 | 0.05 |
The students were equally divided between men and women and differed in weight and usual drinking habits. Because of this variation, many students don’t believe that number of drinks predicts BAC well.