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A customer from cavallaros fruit stand picks a sample of 4 oranges at random from a crate containing 60 oranges of which 5 are rotten. What is the probability that the sample contains 1 or more rotten oranges

Sagot :

I honestly don't know if this is right but it may make sense:
x is the event of picking up a rotten orange.
Probability that x is more than or equal to 1
= 1 - p(x=0)
so use binomialpdf on calculator
where trial is 4, p = 1/12(5/60), x = 0
1 - binoomialpdf(4, 1/12, 0)
and u get 0.294