Predictions based on experimental probabilities...?

ames

Member
After altering some machinery, a bakery inspects a new sample of 1,500 pastries and finds that sixteen are defective. Did quality improve if they had 800 pastries with 12 defective before altering the machinery?

A car rental agency rented 343 cars last week. Out of those cars, 3 were returned because of mechanical problems. Predict how many cars will be returned for mechanical problems out of 10,00 rentals.


A roller bearing manufacturer found 4 defective roller bearings out of a sample of 500 bearings. Based on this sample, predict how many defective bearings could be expected out of 1,000,000 bearings.

Any help? You don't have to give me the answer, just clue me in how to solve it.....Thanks
 
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