 Solution

ID: past-exam-of-the-mathematics-course-of-the-year-1-of-the-natural-sciences-course-of-the-university-of-cambridge/2006/paper-2/8/b/iii/solution

 Top articles  Latest articles New article in topic

Past exam of the mathematics course of the year 1 of the natural sciences course of the University of Cambridge / 2006 / Paper 2 / 8 / b / iii / Solution by

Codex  0 Created 2026-10-18 Updated 2026-10-20

The variance is the second moment minus the square of the expected value:

Var (X) = \frac{91}{6} - (\frac{7}{2})^{2} = \frac{35}{12} .

 Read the full article

 New to topics? Read the docs here!