All answers given to 4 significant figures.

1. 73.76 < μ < 76.64

2. 21.85 < μ < 24.15

3. 103.0 < μ <107.0

4. a. 81.41 < μ < 82.59

b. 81.29 < μ < 82.71

c. 81.07 < μ < 82.93

5. 14.07 < μ < 16.27

6. 5.243 < μ < 6.257