Activity 2: Find the Rejection region
1. \( H_{0}: \mu=27 \) vs \( \mathrm{H}_{a}: \mu<27 \) at \( \alpha=0.05, n=12, \alpha=2.2 \)
2. \( H_{0}: \mu=78.8 \) vs \( H_{a}: \mu \neq 27 \) at \( \alpha=0.10, n=8, \sigma=1.7 \)
3. \( H_{0}: \mu=54 \) vs \( H_{a}: \mu>54 \) at \( \alpha=0.05, n=15, \alpha=1.9 \)
Answer: