Question 148191
<pre>
For the following probability distribution &#956; = 
x<sub>i</sub>|   250    300   400
p<sub>i</sub>|  0.30   0.50  0.20

{{{mu=sum((x[i]p[i]),i=1,n)=x[1]p[1]+x[2]p[2]+x[3]p[3]=250*0.30+300*0.50+400*0.20)=75+150+80=305}}}

Edwin</pre>