The heights of a group of people are normally distributed with a mean of 164 cm and 10% of the people have a height of less than 150 cm.
Find the standard deviation of the heights of the people.
149 exam-style questions on OCR (MEI) A Level Maths 2.4.12 Calculate probabilities from a Normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.