IB Probability question

  • Thread starter ber1023
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it is estimated 2.3% of the cherry tomatos fruits produced on a certain farm are considered to be small and cannot be sold for commercial purposes. The farmers have to seperate such fruits and use them for domestic consumption instead.
a) 12 tomatoes are randomly selected from the produce, Calc
i) the probability that 3 are not fit for selling
ii)the prob that atleast 4 are not fit for selling


answers are a i) 0.217 ii) 0.012

how do I get them? I need full working out! thanks its for studying!!!!!!


-- Not for me but posting for a friend who cant figure out how to get the answer. Thanks
 

Answers and Replies

  • #2
tiny-tim
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welcome to pf!

hi ber1023 ! welcome to pf! :wink:

show us what your friend has tried, and where he's stuck, and then we'll know how to help! :smile:
 

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