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A brokerage survey reports that 30% of individual investors have used a discount broker. In a random sample of 9 individual, what is the probability
A brokerage survey reports that 30% of individual investors have used a discount broker.
In a random sample of 9 individual, what is the probability that
(a) exactly two of the sampled individual have used a discount broker. Ans:
(b) not more than three have used a discount broker.
(c) at least three of them have used a discount broker
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