A drug company has come up with a new pills that will make infertile women to become pregnant. They randomly pick 12 women, whom 3 were Hispanic. They administer the pills. The pills were taken for 18, 15, 25, 24, 28, 45, 21 20, 17, 24, 18, 19 days. A month after, few of the women reported that they were pregnant.
a) what will be the probability that all three of them are Hispanic?
b) What is the min and max of the days that woman should take the pills?