Adult heights X X\,X cm are modelled by a Normal distribution with mean 164 cm. It is known that P(X<150)=0.10P(X<150)=0.10P(X<150)=0.10.
Find the standard deviation.
328 exam-style questions on WJEC A Level Maths 4.2 Statistical distributions (A-level only), covering 4.2.1 Statistical distributions (A-level only), 4.2.2 Statistical distributions (A-level only), and 4.2.3 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.