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Suppose we have a bag with $10$ slips of paper in it.  Eight slips have a $3$ on them and the other two have an $8$ on them. 

 

If we add another 7 slips with a 8 on them, what is the expected value of the number shown when we draw a single slip of paper?

 Dec 21, 2023
 #1
avatar+129193 
+1

Expected value  = Outcome * probability

 

So   (3) (8/17)  +( 8 )(9/17)  =    [24 + 72 ] / 17  =  96 / 17 ≈   5.6

 

cool cool cool

 Dec 21, 2023

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