Question

The quality control manager of a peanut butter manufacturing plant want to ensure the quality of the peanut butter in the jars coming down the assembly line.describe a representative sampling method she could use?

Answer 1

One method she could use would be to take the nth jar off of the line for the entire day for a certain number of weeks and see what portion of them meet standards.  For example, she could test the 10th jar from the line all day, then repeat the process a few days later.