A variable Y Y\,Y is normally distributed with a standard deviation of 2.8. Given P(Y<26)=0.3P(Y < 26) = 0.3P(Y<26)=0.3
Find the mean of YYY.
351 exam-style questions on AQA A Level Maths 2.4.2 The Normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.