AP Statistics scores
In 2001, more than 41,000 Statistics students nationwide took the Advanced Placement Examination in Statistics. The national distribution of scores and the results at Ithaca High School are shown in the table.
|
|
Ithaca High School |
| Score |
National Distribution |
Number of boys |
Number of girls |
| 5 |
11.50% |
13 |
13 |
| 4 |
23.40% |
21 |
15 |
| 3 |
24.90% |
6 |
13 |
| 2 |
19.10% |
7 |
3 |
| 1 |
21.10% |
4 |
2 |
a) Is the distribution of scores at this high school significantly different from the national results?
b) Was there a significant different between the performances of boys and girls at this school?