Part 1 of 2 Parts A manufacturer of wooden rulers must reduc…
Part 1 of 2 Parts A manufacturer of wooden rulers must reduce the percentage of defective rulers of its #1 best seller – the “[m]-12” model which displays both 12 inch and 305 mm scales on the same side! Each ruler is inspected for four defects: too long, too short, blurred markings, and rough finish. Workers pulled a random sample of [n] rulers, and found [p] rulers with a total of [d] defects. Estimate PPM. (Express answer as “per million”)
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