berrycheryy berrycheryy
  • 13-05-2023
  • Mathematics
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Lamps are made in a factory.
A random sample of 50 of the lamps is tested and 4 of them are found to be faulty.
A total of 4000 lamps is made in one day.
Calculate the number of these 4000 lamps you would expect to be faulty.

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