In an investigation into blood doping at major athletic events, a sports organisation analysed 14,275 blood tests from a pool of athletes. They discovered that 13% of these blood tests showed a level of red blood cell variation that was higher than expected. Calculate the number of blood tests that showed more variation than expected. Show your working and round your answer to the nearest whole number.
55 exam-style questions on Edexcel IGCSE Biology Transport. Each one has a worked solution and a mark scheme showing where the marks go.