Stats Math Question

Question

According to a recent survey, 14% of the population is left handed. If you randomly select 4 people what is the probability that at least one of them is left handed?

Answer 1

14% is left handed

select 4 people randomly

86% are not lefties

for one person, odds are 1-.86=14% they're left handed

for two people odds are 1- .86^2 one is left handed

for four people odds are 1-(.86)^4 that one is left handed

1-86^4 = about 45.3%