## 'Into the Exponential Distribution' printed from http://nrich.maths.org/

4. From the graphs, I visually estimated that $P(0.5 < Red < 0.7) = 0.125$. Can you work out how I made this estimate? Is it an over-estimate or an underestimate? How close do you think that estimate is to the correct answer? Work out the correct answer to find out.