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24 August, 20:43

A university has 29,970 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

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  1. 24 August, 22:39
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    Set up a proportion.

    Let x = the number of students in 29970 who speak 3 or more languages.

    285/19 = 29970/x Cross multiply

    285 x = 19 * 29970

    285x = 569430

    x = 569430/285

    x = 5415 students speak 3 languages.
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