What is the probability that none will have balance


Nine percent of undergraduate students carry credit card balances greater than $7,000. Suppose 10 undergraduate students are selected randomly to be interviewed about credit card usage.

What is the probability that two of the students will have a balance greater than $7,000?
What is the probability that none will have a balance greater than $7,000?
What is the probability that at least three will have a balance greater than $7,000?

 

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Basic Statistics: What is the probability that none will have balance
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