anonymous
  • anonymous
a box contains five one dollar bills, nine five dollar bills, ten ten dollar bills, and nine twenty dollar bills. what is the expectation if one bill is selected. $10.00 $9.00 $11.00 $12.00
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Loser66
  • Loser66
Please, post the original question by scanning. The options are not the correct one because it doesn't link to the problem.
anonymous
  • anonymous
what do you mean?
dan815
  • dan815
|dw:1435147951289:dw|

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dan815
  • dan815
tells you the money on average per bill
Loser66
  • Loser66
dan, expectation mean probability, right?
dan815
  • dan815
expectation is the mean of this set yes
Loser66
  • Loser66
so, the options should be % form, right?
dan815
  • dan815
its the mean of {1,1,1,1,1,5,5,5,5,5,5,...5,10,10,10...10,20,20,20,20..,20} its mean of that set
dan815
  • dan815
no its not a probability, it is the mean value
Loser66
  • Loser66
ok, I should shut up to learn more, hehehehe... I am waiting for your explanation, please
dan815
  • dan815
thats it, its how to find average of these numbers
dan815
  • dan815
here is a simpler example if u have a set {1,2,2,3,3,3,4} what is the expected value?
dan815
  • dan815
to do that you would add up all the numbers and divided by the number of numbers
dan815
  • dan815
same thing with this example
dan815
  • dan815
we are just finding average of this set
anonymous
  • anonymous
so if I pull one bill whats my answer or how do I figure it out?
dan815
  • dan815
|dw:1435148300369:dw|
anonymous
  • anonymous
that was painfully simple.
Loser66
  • Loser66
But it is simple to the person who knows it like dan, not to me.
dan815
  • dan815
hahah u know it too
dan815
  • dan815
this is the theory behind finding average height of function and center x and y of areas
anonymous
  • anonymous
The book never went over that in the chapter, I have no idea how I was supposed to know it.
dan815
  • dan815
center of masses

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