Question

In a class of 25 students, 15 of them have a driver's license. If ten students are randomly selected, what is the expected number of students that would have a driver's license?

Answer 1

Expected number of students would have a driver's license = 6

Explanation:

Explanation:-

Given data In a class of 25 students, 15 of them have a driver's license

The sample proportion

`p = (x)/(n) = (15)/(25) = 0.6`

Let 'X' be the binomial distribution

Given sample size 'n' = 10

mean of the binomial distribution or expected number of students would have a driver's license

μ = n p

= 10 × 0.6

= 6

Conclusion:-

Expected number of students would have a driver's license = 6