00:01
The probability of success in a bernoulli trial is 0 .18.
00:05
So i'll call that p.
00:06
We have six bernoulli trials.
00:09
Okay, if you have repeated identical bernoulli trials that are independent of each other, you have a binomial distribution.
00:17
A fixed number of independent trials, two outcomes for each, it is a bernoulli, and the same probability p of success on each.
00:25
We want five failures and one success.
00:29
The binomial formula is the probability of x successes, is n choose x p to the x, 1 minus p to the n minus x.
00:39
Now this works because these are independent of each other, so you combine their probabilities by multiplicity.
00:46
This term will be for the 1 success, 0 .18.
00:50
This term is for the 5 failures, each a probability of 0 .82...