A simple random sample of 100 bags of tortilla chips produced at Plant A is sele

Question

A simple random sample of 100 bags of tortilla chips produced at Plant A is selected every hour for quality control. In the current sample, 18 bags had more chips (measured in weight) than the labeled quantity. This simple information is being compared to data collected at Plant B. In thecurrent sample of 100 bags of chips from Plant B, 12 bags had more chips than the labeled quantity. What is the relative risk that a bag of tortilla chips produced at Plan A had more chips than the Labeled quantity as compared to Plant B?

Answer:

(18/100)/(12/100) = 1.5

or

(12/100)/(18/100) = 0.667

Which is correct?

Explanation / Answer

A simple random sample of 100 bags of tortilla chips produced at Plant A is sele

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