For Exercises 5–10, the observed frequencies are provided in a contingency table of two categorical variables. Find the expected frequencies, on the assumption that the variables are independent.
7.
| E1 | E2 | E3 | |
|---|---|---|---|
| F1 | 30 | 20 | 10 |
| F2 | 35 | 24 | 8 |
11.2.7
| E1 | E2 | E3 | Total | |
|---|---|---|---|---|
| F1 | 30.71 | 20.79 | 8.50 | 60 |
| F2 | 34.29 | 23.21 | 9.50 | 67 |
| Total | 65 | 44 | 18 | 127 |