An American Society of Investors survey found 30 percent of individual investors have used a discount broker

Posted on 2014-10-17 06:24:00 in Statistics by ABDULLAH

An American Society of Investors survey found 30 percent of individual investors have used a discount broker. In a random sample of nine individuals, what is the probability: a. Exactly two of the sampled individuals have used a discount broker? b. Exactly four of them have used a discount broker? c. None of them have used a discount broker?

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