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An American Association of Individual Investors (AAII) survey found that 33% of AAII members had purchased...

An American Association of Individual Investors (AAII) survey found that 33% of AAII members had purchased shares of stock directly through an Initial Public Offering (IPO). From a random sample of 20 AAII members, (Give answers to four decimal places.)

a) what is the probability that exactly 6 had purchased IPO’s?

b) what is the probability that between 8 and 12 had purchased IPO’s?

c) what is the probability that more than 10 had purchased IPO’s?

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