In: Statistics and Probability
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?
(Show work please.)