00:01
Hello student, let's take a look at this question.
00:04
So in this question we are given the proportion of flights, the proportion of flights that arrive on time is, that arrive on time is 80%.
00:22
So let's consider a random sample of 180 flights.
00:27
So this means that we are going to take the sample size n is equal to 180.
00:32
So here, x represents the number of flights that arrive on time.
00:39
X represents the number of flights that arrive on time, on time.
00:47
So here x follows binomial distribution with parameters, n is equal to 180 and p is equal to 80%, which is 0 .80.
00:57
So first let's calculate the expected number of flights that arrive on time.
01:01
So mean, mu is equal to e of x is calculated as n times of p...