Yorlin6045 Yorlin6045

21-05-2018
Mathematics

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A middle school has 490 students. mae surveys a random sample of 60students and finds that 24 of them have pet dogs. how many students are likely to have pet dogs?

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Ace2004 Ace2004

23-05-2018

take 490 as 490/3=130

then 100/60=0.60

then 130/60= 2.1666666x3(490/3)

=6.5x24=156

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