posted by janice .
participant on tv show picke from lage # applicants with equal number of men and woman .amongst the last 9 participant 7 have been women . if they are picked randomly what is the probability of geting 7 more women when 9 people are picked
- large population=>probability is (almost) constant
- p=0.5 (men) q=(1-0.5) (women)
- random independent multiple trials N=9
- 2 possible outcomes at each trial
P(7)=C(9,7)*p^7 * q^2