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.
Practise Edexcel A Level Maths Finding the mean and standard deviation with exam-style questions for A Level Maths. 48 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
