CAS Exam MAS-I Spring 2018, Question 21
Study guide: Exam MAS-I
You would like to determine if coffee consumption varies by start time of job shifts. A random sample of 400 adults were surveyed and the results are as follows:
| Low | Medium | High | Total | |
|---|---|---|---|---|
| Day | 100 | 25 | 75 | 200 |
| Night | 25 | 125 | 50 | 200 |
| Total | 125 | 150 | 125 | 400 |
Calculate the value of Chi-square statistic used in this test.
- A) Less than 60
- B) At least 60, but less than 80
- C) At least 80, but less than 100
- D) At least 100, but less than 120
- E) At least 120
Answer this question and see the worked solution