1. Recap on Z value calculations.
Normal Distribution
Recap on Z value calculations.

4. P (0 < Z < 1.5)

5. Subtracting

6. P( 1 < Z < 1.5)

7. P( 1 < Z < 1.5)
Use table to get the value of
P( 0 < z < 1.5)

8. P( 1 < Z < 1.5)
Use Table to get the value of
P( 0 < Z < 1)

9. P( 1 < Z < 1.5)
Take away your answers to leave
P(1 < Z < 1.5)

10. Subtracting

11. P ( Z > 1.5)

12. P ( Z > 1.5)

13. P ( Z > 1.5)
Use table to look up value of
P ( 0 < Z < 1.5)

14. P ( Z > 1.5)
Take that value away from 0.5

15. Adding

16. P ( Z < 1.5)

17. P ( Z < 1.5)
This area is 0.5

18. P ( Z < 1.5)
Look up the value of
P ( 0 < Z < 1.5)

19. P ( Z < 1.5)
Add 0.5 and your answer for
P ( 0 < Z < 1.5)

20. Adding

21. P ( -0.5 < Z < 1.5)

22. P ( -0.5 < Z < 1.5)
Look up the value of
P ( 0 < Z < 0.5)
which is the same as
P ( -0.5 < Z < 0) due to symmetry

23. P ( -0.5 < Z < 1.5)
Look up the value of
P ( 0 < Z < 1.5)

24. P ( -0.5 < Z < 1.5)
Add your two answers together.

25. You must draw a diagram to help you identify the values you need from the table.
Sketch a normal curve.
Shade in the part you are asked to calculate.
Think whether you need to add or subtract.