| No | Description | Difficulty | Syllabus | Level | |
|---|---|---|---|---|---|
| 1 | Find p(a less than X less than b) with stdev,mean, bounds a and b in form P(Z lt z) with simplification; MC | Intermediate | A-level | S1 | Related material |
| 2 | Find p(a less than X less than b) with stdev,mean, bounds a and b in form Phi(z) with simplification; MC | Intermediate | A-level | S1 | Related material |