NAEP Mathematics Grade 8

Category - Mathematics

From a shipment of 500 batteries, a sample of 25 was selected at random and tested. If 2 batteries in the sample were found to be dead, how many dead batteries would be expected in the entire shipment?
  1. 10
  2. 20
  3. 30
  4. 40
  5. 50
Explanation
Answer: D - 40
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