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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 one additional $3$ to the bag?

 Jul 22, 2021
 #1
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Here's a similar one by CPhill, change the values and plug in! https://web2.0calc.com/questions/suppose-we-have-a-bag-with-10-slips-of-paper-in-it

 Jul 22, 2021
 #2
avatar+780 
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$\frac{9 \cdot 3 + 2 \cdot 9}{11}=\frac{9(3+2)}{11}=\frac{45}{11}$

 Jul 22, 2021

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