A university has 28,980 students. In a random sample of 180 students, 12 speak three or more languages. Predict the number of st
udents at the university who speak three or more languages. The expected number of students at the university who speak three or more languages is .
1 answer:
Word | know | Unknown
Language| 12 | x
Total | 180 | 28980
Use cross multiply:
12(28980) = 180(x)
347760 = 180x
347760/180=1932
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