anonymous
  • anonymous
A sample of 36 homeowners who recently hired a landscpaping sercived yielded the following info about their landscapper. Number of owners 22- yes would recoomend to more friends.5 would not. and 9 are not sure. 3 homeowners who provided info were selected at random. Dtermine the pro they would all recomend their landcapper. What is the pro that 3 homeowners would recomend their landscapper?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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M
  • M
(33/36)(32/35)(31/34)
anonymous
  • anonymous
Of the one who would recommend
M
  • M
yes

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More answers

anonymous
  • anonymous
so all them or just one?
M
  • M
that is the probability of all 3 homeowner randomly selected will recommend their landscaper
M
  • M
you just hav eto multiply the fractions
anonymous
  • anonymous
mulplying them all?
M
  • M
(33x32x31)/(36x35x34)
M
  • M
but it's easier to do it with factorials
M
  • M
33!/[(36-33)!(30!)]
M
  • M
crap made a mistake lol it's 22x21x20/36x35x34
M
  • M
just think probability of first person selected that would recommend landscaper is 22/36, then second is 21/35 since 1 recommender is already picked. then 20/34 since two recommenders are already picked
anonymous
  • anonymous
but wouldnt it come to one answer?
anonymous
  • anonymous
like one fraction alone?
M
  • M
9240/42840 if u multiply the fractions i gave u then u get that
M
  • M
that is the answer
anonymous
  • anonymous
395841600?
M
  • M
no it's 0.2156 or 21.56%

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