pg 279 1-5,7-45 odd

1. a bell curve
2. it is important because it standardizes the data
3. 1
4. .5
5. 68%, 95%,99%
7.0.7223
9.0.9808
11.0.4522
13 0.078
15 0.1145
17 0.025
19 0.1471
210.0154
23 0.4286
25. 0.2537
27 0.9545
29. 0.9441
31 0l0024
32 0.0793
41 0.51
43 0.98
45 0.1