hogwarts express llc is a manufacturer of train engines. luckily they rely on a robust quality control system for in-pro

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answerhappygod
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hogwarts express llc is a manufacturer of train engines. luckily they rely on a robust quality control system for in-pro

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hogwarts express llc is a manufacturer of train engines. luckilythey rely on a robust quality control system for in-process productinspection and not on magic to build high quality products. as partof the manufacturing process, they inspect each batch of trainengines 3 separate times. every day they manufacturer 3 batches ofengines. each batch contains 50 engines. they operate 20 days permonth. because of this extensive quality control process, they onlyhave 2 defects per batch. what is the hogwarts express defects permillion opportunities (dpmo)?
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