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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 a $9$ on them.
What is the expected value of the number shown if we add two additional $3$'s to the bag?

 Jul 22, 2021
 #1
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The expected value is 48/11.

 Jul 22, 2021
 #2
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3(10/12)  + 9(2/12)  =    30/12  +  18/12 =  48/12  =   4

 

cool cool cool

 Jul 22, 2021

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