Probability

Question

Assume that 40% of the population has brown eyes. If six people are randomly selected, find the probability that none of them has brown eyes.

Answer 1

Each time you pick someone, there's a 60% chance that they don't have brown eyes.  When we want a certain string of events to happen (A and B and C, etc), we use multiplication of probabilities.

 

So to have that happen 6 times in a row, just multiply the probability (as a decimal) 6 times.

 

(.6)*(.6)*(.6)*(.6)*(.6)*(.6) =