A factory produces 3 different models of cars every year; 673 from the first model, 514 from the second one, and 213 from the third one. If the factory’s manager wants to select a sample of of the produced cars for inspection, determine the number of cars in the selected sample.
We need a sample of of the produced cars. So, we must first calculate the total number of cars produced that year.
cars were produced. So we must calculate of .
There would be 196 cars in the selected sample.