Mathematics, 18.10.2019 08:30 pearlielb

From a shipment of 350 light-bulbs, a sample of 70 was selected at random and tested. if 21 light-bulbs in the sample were found to be defective, how many defective light-bulbs would be expected in the entire shipment?

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From a shipment of 350 light-bulbs, a sample of 70 was selected at random and tested. if 21 light-bu...