An American Association of Individual Investors (AAII) survey found that 25% of AAII members had purchased shares of stock directly through an Initial Public Offering (IPO). From a random sample of 15 AAII members, (Give answers to four decimal places.) a) what is the probability that exactly 5 had purchased IPO’s? b) what is the probability that between 2 and 7 had purchased IPO’s? c) what is the probability that at least 3 had purchased IPO’s?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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An American Association of Individual Investors (AAII) survey found that 25% of AAII members had purchased shares of stock directly through an Initial Public Offering (IPO). From a random sample of 15 AAII members, (Give answers to four decimal places.)

a) what is the probability that exactly 5 had purchased IPO’s?

b) what is the probability that between 2 and 7 had purchased IPO’s?

c) what is the probability that at least 3 had purchased IPO’s?

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