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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. How many $9$'s do I have to add before the expected value is at least $8$?

 
 Jul 21, 2021
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Thirty eight  9's   to be added .

 
 Jul 21, 2021

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