SOLUTION: one in four americans own stock, in a random sample of ten people, what is the probability that the number owning individual stocks is? Exactly 2=0.0282 (???) At most two? More

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Question 514255: one in four americans own stock, in a random sample of ten people, what is the probability that the number owning individual stocks is?
Exactly 2=0.0282 (???)
At most two?
More than two?=0.718 (???)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
one in four americans own stock, in a random sample of ten people, what is the probability that the number owning individual stocks is?
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Binomial Problem with n = 10 and p = 0.25
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I used a TI-84 calculator to get the following answers.
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Exactly 2 = 0.2816
At most 2 = binomcdf(10,0.25,2) = 0.5256
More than 2 = 1 - 0.5256 = 0.4744
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Cheers,
Stan H.