Answer:
Step-by-step explanation:
Total number of people, n = 30
number of white people = 17
number of non white people = 13
number of selected person which are white = 12
So, the number of ways to select the 12 white people out of 17 white people
= [tex]^{12}C_{17}=\frac{17!}{12!\times 5!}=6188[/tex]
the number of ways to select 12 white people out of total 30 people
[tex]^{30}C_{12}=\frac{30!}{12!\times 18!}=86410772.88[/tex]
So, the probability to select 12 white people out of 30 people is
[tex]\frac{6188}{86410772.88}=7.2\times 10^{-5}[/tex]
