Question

A university has 28,470 students. In a random sample of 285 students, 19 speak three or more languages. Predict the number of students at the university who speak three or more languages. The expected number of students at the university who speak three or more languages is .

Answer 1

The expected number of students at the university who speak three or more languages is 1898.

Explanation:

Given that A university has 28,470 students.

In a random sample of 285 students, 19 speak three or more languages.

To find the expected number of students at the university who speak three or more languages :

From the given 19 out of 285 speaks three or more languages, a expected number of students would be given by

`28470* ((19)/(285))`

`=(540930)/(285)`

`=1898`

∴ the expected number of students at the university who speak three or more languages is 1898