Statistics for Business: Decision Making and Analysis, 3rd Edition

Think About It

1. 21. 0.3

2. 23. 0.10

3. 25. E(Z) > 0.

4. 27. Y.

5. 29. 0

6. 31.

   1. P(W = 5) = p(5) = 1/10 and

      P(W = − 1) = p(− 1) = 9/10

   2. − 0.4. No, because the mean is not zero

7. 33.

   1. Yes

   2. Better than fair to the player