Question: Ch 1 0 : Quality Control: Process Capability: Whirlpool Mfg . Whirlpool Mfg . , an appliance manufacturer, si performing research to select an appliance

Ch 10: Quality Control: Process Capability: Whirlpool Mfg.
Whirlpool Mfg., an appliance manufacturer, si performing research to select an appliance repair
company to service the Pomona Valley. Whirlpool has an acceptable range of repair time of 50 minutes
to 90 minutes. It has narrowed down the selection to two finalists. Trial tests runs results from the two finalists are provided below.
Al Star Appliance Repair:
Mean Repair Time: 74 minutes Standard Deviation: 4.0 minutes

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