Answer:
students at the university who speak three or more languages is 2082
Explanation:
given data
students = 31230
random sample = 255
speak three or more languages = 17
solution
we consider here numbers of students at university who speak three or more language = x
so here we will use proportions
=
........................1
solve it we get
x = 2082
so here students at the university who speak three or more languages is 2082