Out of 190 CDs tested, 26 are defective. Estimate the number of defective CDs in a batch of 1000.
1 answer:
Divide the number of defective by the number checked:
26/190 = 0.1368
Multiply that by 1000:
0.1368 x 1000 = 136.8
Round up to 137
Out of 1000 cd’s 137 would be defective
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