Question 688077
red marbles=6
blue marbles=8
white marbles=11
yellow marbles=6
total marbles=31
selected marbles=5
when marbles drawn without replacement,then 
p(4 or more are white)=[c(11,4)*c(20,1)]/c(31,5) + [c(11,5)*c(20,0)/c(31,5)]=0.042