Question 1195798
.
A $2 Powerball lottery ticket has a 1/27.05 probability of winning $4, 
a 1/317.39 probability of winning $7, a 1/10,376.47 probability of winning $100, 
a 1/913,129.18 probability of winning $50,000, 
a 1/11,688,053.52 probability of winning $1,000,000, 
anda 1/292,201,338 probability of winning the Grand Prize. 
If the Grand Prize is currently $100,000,000, what is the expected value 
of a single Power- ball lottery ticket?
~~~~~~~~~~~~~~~


<pre>
It is  

    {{{4/27.05 + 7/317.39 + 100/10376.47 + 50000/913129.18 + 1000000/11688053.52 + 100000000/292201338-2}}} = -1.337889628 dollars.
</pre>