anonymous
  • anonymous
Of the 1,000 students in a local college, 420 own brand X mobile phones and 580 own brand Y mobile phones. Of these students, 80 own both brands of mobile phones. Find the probability that a student chosen at random has a brand X mobile phone given that he has a brand Y mobile phone. 2/14 5/21 3/28 4/29
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
@Miss.SweetiePie
anonymous
  • anonymous
sorry for bugging! it's just that i cant get any wrong or else i wont pass
anonymous
  • anonymous
its okay, its just I dont feel too confident in helping in this one right now...is there another we can try ?

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anonymous
  • anonymous
this is the last one /:
anonymous
  • anonymous
maybbe @welshfella can help
anonymous
  • anonymous
alright hopefully they answer haha
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
im being ignored v.v lol
anonymous
  • anonymous
what if no one answers? im screwed @Miss.SweetiePie
welshfella
  • welshfella
sorry i've forgotten this stuff
anonymous
  • anonymous
it's ok i dont blame u
anonymous
  • anonymous
tell me when im gonna need this in life lol
anonymous
  • anonymous
looks like it's just u and me xD @Miss.SweetiePie
anonymous
  • anonymous
you leave* haha
anonymous
  • anonymous
no im here Im just doing something as well
anonymous
  • anonymous
omg im scared!!! lol xD
anonymous
  • anonymous
i HAVE to get this stupid question right
anonymous
  • anonymous
when does it have to be turned in?
anonymous
  • anonymous
it doesnt have a due date it's just a mastery test on plato
anonymous
  • anonymous
hi ! okay so this is a question f conditional probability. the condition here is that the student chosen has a Y brand phone so our sample becomes 580 from 1000 ( because 580 students have Y brand phone) now we know that 80 students have both so the probability will be 80/580
anonymous
  • anonymous
aka credit recovery
anonymous
  • anonymous
so i just need to simplify that? @nitishdua31
anonymous
  • anonymous
yes :)
anonymous
  • anonymous
just remember, whenever there is a condition, the sample set changes
anonymous
  • anonymous
omg thanks!
anonymous
  • anonymous
ur welcome
anonymous
  • anonymous
FUTURE PLATO PEOPLE! the answer is D 4/29

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