70% of population have brown eyes. If 13 people are randomly selected, find the probability that at least 11 of them have brown eyes. Is it usual to randomly select 13 people
I hope whoever asked this question appreciates the level of insight involved.
this is why I came here!
We have
C(13,11)(.7)^11(.30)^2 + C(13,12)(.7)^12(.30)^1 + C(13,13)(.7)^13(.3)^0 =
about 20.2%
