Sketch the graphs and find the values of the following areas under the normal curve which lie from:

1. z = -0.63 to z = 0.63
2. z = -0.84 to z = 1.23
3. 3. z = 0.26 to z = 0.97

4. z = -0.42 to z = -1.0

5. z = -1.23 to z = 2.23

6. z = 1.32 to z = 1.78

7. z = -0.75 to z = 2.10

8. z = -1.25 to z = 0

9. z = 0 to z = 2.20

10. and to the right of z =1.85

11. and to the right of z = -1.16

12. and to the right of z = 0.28

13. and to the left of z = -2.18

14. z = 0.86 and to its left

15. z = -2.33 and to its right

16. and to the left of z = 0

17. and to the right of z = 0

18. z = -1.75 and to its right

19. and to the left of -1.5 or from andto the right of 1.5

20. -2 to -1.2 and to 1.2 to 2

21. z = 0 to z = -1.25