00:01
We're trying to figure out if everyone who appears for a flight will get a seat.
00:06
And we know that 105 people buy a ticket, so our sample size is 105.
00:12
That's also known as n.
00:15
The probability that a person who buys a ticket, generally speaking, appears for a seat is 0 .0, which is less than 9%, and the probability that 100 or less appear on the flight, basically what we're trying to figure out, is that what's the probability? so the plane has 100 seats.
00:34
So what's the probability that 100 or less appear on the flight because filling up the entire fly would be 100 or less seats? from there, we could use a binomial distribution to figure this out.
00:48
So a binomial distribution.
00:50
And then from there, we can just do a binomial distribution for anywhere from zero people appearing all the way to 100 people.
00:59
Appearing and get a cumulative distribution there...