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OpenStudy (anonymous):
A sample of 143 firecrackers contained 5 duds. How many duds would you expect in a sample of 1430 firecrackers?
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OpenStudy (anonymous):
10 times 5
OpenStudy (anonymous):
143/5 = 1430/x 143x=7150 x=50 duds
OpenStudy (anonymous):
50
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