00:02
All right, so we have two different probability questions.
00:05
The first one says that the probability you'll make a sale is 0 .02.
00:09
And we're going to take a sample of 60, and we would find the probability that we make at most two sales.
00:16
So the probability x is less than are equal to two.
00:18
So this is going to follow a binomial distribution because we have success or failure.
00:23
You make a sale or you don't.
00:25
The probability success is going to remain the same, and we can assume that people come into the store to buy things independently.
00:30
So since we're finding less than or equal to, we're going to use binom cdf.
00:36
Number of trials is 60.
00:39
Probability of success is 0 .02.
00:41
And we want up to and including the value of 2...