Paper 7 May/June 2003 MATHEMATICH (9709/7) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

a) The diagrams show the graphs of two functions, g and h. For each of the functions g and h, give a reason why it cannot be a probability density function.
b) The distance, in kilometres, travelled in a given time by a cyclist is represented by the continuous random variable $X$ with probability density function given by
$f\left( x \right) = \left\{ \begin{gathered}
\frac{{30}}{{{x^2}}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,10 \leqslant x \leqslant…