A company manufactures cardboard containers for packaging frozen fruit juices. T

Question

A company manufactures cardboard containers for packaging frozen fruit juices. The manufacturing process forms the containers by joining cardboard stock to a metal bottom. The container can be inspected to determine if there might be leaks along the cardboard seam or where the metal bottom is attached. It is known from long experience that 18% of cans produced by this process are defective. A random sample of 50 cans was selected from the production process on Monday, and it was found that 12% of the selected cans were defective. Because this seemed to indicate an improvement, another sample was selected of the same size on Tuesday, and in it 21% of the cans were defective. For the following scenario, determine if the numbers in boldface type are statistics or parameters.

18% ________________

12% __________________

21% __________________

Explanation / Answer

18% parameter ; as this represent defect rate of population

12%: statistic; as it is the result of sample

21% statistic ;as it is the result of sample

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