anonymous
  • anonymous
the sales force a bussiness consists 10 men and 10 women. a production unit of 7 people are choosen at ramdon. what is the prob it will include 2 men and 5 women?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
didnt I already answer this? do you know permutations and combinations?
anonymous
  • anonymous
I meant do you understand permutations and combinations?
anonymous
  • anonymous
Go back to previous time you asked this, I gave more explanation on dhatraditya's work

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anonymous
  • anonymous
now wat
anonymous
  • anonymous
This is probably the 10th question on this subject you've asked about, and it doesn't seem like you're any closer to learning what you need to know to solve these on your own.. Maybe you should actually spend some time reading the book? \[\frac{{10 \choose 2} * {10 \choose 5}}{20 \choose 7}\]
anonymous
  • anonymous
i got that up to the ending but then i come w the decinmal
anonymous
  • anonymous
yes, probabilities are between 0 and 1 and typically decimals
anonymous
  • anonymous
(10C2*10C5)/(20C7) = 45*252/77520= 1134/7752 = 567/3876 = 189/1
anonymous
  • anonymous
189/1? how did you get that?
anonymous
  • anonymous
and then do u devide all them ?
anonymous
  • anonymous
i have no idea what you are talking about.
anonymous
  • anonymous
how do u get the answer?
anonymous
  • anonymous
What you have above is correct except the last fraction.
anonymous
  • anonymous
ok now what?
anonymous
  • anonymous
the end? If you want a decimal approximation you could plug that fraction into your calculator
anonymous
  • anonymous
all them?
anonymous
  • anonymous
they're all the same fraction (except the 189/1 which I have no idea where it came from)
anonymous
  • anonymous
so i would devide all those numbers? or?
anonymous
  • anonymous
1134/7752. use your calculator to do that division. the answer will be a decimal number. that is your answer.
anonymous
  • anonymous
6.835978835
anonymous
  • anonymous
so would the answer be 6.84?
anonymous
  • anonymous
oh come on! what is 1134 divided by 7752?
anonymous
  • anonymous
0.1462848

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