SOLUTION: Please help me solve this problem. A box contains 24 batteries, 4 of which are defective. If 4 batteries are selected at random, find the probability: a. Atleast 1 defective b.

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Question 833464: Please help me solve this problem.
A box contains 24 batteries, 4 of which are defective. If 4 batteries are selected at random, find the probability:
a. Atleast 1 defective
b. None is defective
c. All are defective.
Your help is so much appreciated. Thank you very much and more power! :)
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
A box contains 24 batteries, 4 of which are defective. If 4 batteries are selected at random, find the probability:
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Binomial Problems with n = 4 and p(defect) = 4/24 = 1/6 and p(not)=5/6
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a. P(Atleast 1 defective) = 1-P(none defect) = 1-(5/6)^4
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b. P(None is defective) = (5/6)^4
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c. P(All are defective) = (1/6)^4
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Cheers,
Stan H.
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