Central Limit Theorem Answers

1. 0.1041

2. 0.8904

3. 0.8458

4. 0.1241

5. 0.8710

6. Mean = 2000 hours and standard deviation is 1768 hours.

7. 0.0943

8.

a. E(X) = μ = 3.49 and standard deviation is 1.411

b. E() = 3.49 and SD() = 0.2231

c. P( > 3) = 0.0141