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OpenStudy (gi12):
A bag contains 45 marbles of various colors. Jon draws 60 times, each time replacing the marble before drawing again. He gets a total of 12 blue marbles. Which is best prediction of how many blue marbles are in the bag? A. 5 B. 9 C. 12 D. 15
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OpenStudy (gi12):
@Atsie @texaschic101
OpenStudy (anonymous):
B.
OpenStudy (gi12):
thx
OpenStudy (anonymous):
12 out of 60 tries gave a blue marble. This means that the ratio is 1/5. 1/5 of 45 is 9.
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