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.
228 exam-style questions on CCEA A Level Maths 4.5.1 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.