[Steps Shown] Let us assume we survey 2 50 students before and after watching the educational video for Sexual transmission disease to discover whether they
Question: Let us assume we survey 2 50 students before and after watching the educational video for Sexual transmission disease to discover whether they will use condom when they have sex . The following table is the data:
| Condom Use | Time 2 (After) | Total | ||
| No | Yes | |||
| Time 1 (Before) | No | 30 | 50 | 80 |
| Yes | 70 | 100 | 170 | |
| Total | 100 | 150 | 250 | |
Do you have enough evidence to decide that the proportion condom use changed? Let alpha=.05. Interpret the result.
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