A university has 31,230 students. In a random sample of 255 students, 17 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

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

they use tree rings to figure out weather patters.