Find solutions to the following problems. Be sure to include a
statement about significance and variability between the
variables.
| Number of Cups of Coffee |
Stress Level |
| 3 | 5 |
| 2 | 3 |
| 4 | 3 |
| 6 | 9 |
| 5 | 4 |
| 1 | 2 |
| 7 | 10 |
| 3 | 5 |
 = 3.88 |
 = 5.13 |
| s = 2.03 | s = 2.90 |
In a study of caffeine and stress, college students indicate how
many cups of coffee they drink per day and their stress level on a
scale of 1-10. The data appear below:
Determine the regression equation for predicting stress level
from the amount of coffee per day one consumes.
Predict the stress level for someone who drinks 8 cups of coffee
a day.
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