The weights of apples in a harvest are normally distributed with a mean of 160 g and a standard deviation of 15 g.
Find the weight below which 75% of the apples lie.
390 exam-style questions on AQA A Level Maths 2.4 N: Statistical distributions, covering 2.4.1 Discrete distributions and the binomial, 2.4.2 The Normal distribution (A-level only), and 2.4.3 Selecting an appropriate distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.