June 2022 Paper 2 Q6
6 \(X\) is a continuous random variable such that \(X \sim \mathrm{N}(\mu, \sigma^2)\).
On the sketch of this Normal distribution in the Printed Answer Booklet, shade the area bounded by the curve, the \(x\)-axis and the lines \(x = \mu \pm \sigma\). [2]
| Scheme | Marks | AO |
|---|---|---|
![]() | M1 A1 | 3.1a 1.1 |
| [2] |
Notes
M1: area identified which is symmetrical about the mean
A1: \(x = \mu \pm \sigma\) at points of inflection
