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Question
State University recently randomly sampled ten students and analyzed grade point average (GPA) and number of hours worked off-campus per week. The following data were observed:
| GPA | HOURS |
| 3.14 | 25 |
| 2.75 | 30 |
| 3.68 | 11 |
| 3.22 | 18 |
| 2.45 | 22 |
| 2.80 | 40 |
| 3.00 | 15 |
| 2.23 | 29 |
| 3.14 | 10 |
| 2.90 | 0 |
The test statistic for testing whether the two variables are significantly correlated is approximately z = 1.56.
Answer
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