Regarding the quality of the process to make letter openers

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Reference no: EM131801290

1. Measurements were taken regarding the quality of the process to make letter openers: Mean 18.9 Standard Dev 0.20 Lower Spec 17.9 Upper Spec 19.9 Determine the process' capability index. (Keep four decimal places in your answer)

2. 60 customers per hour arrive randomly (i.e., CVa = 1) and randomly join one of 6 unpooled queues. Each of the six employees can handle exactly 15 customer requests per hour (i.e., no variability). How many minutes of waiting time can be saved by pooling of all six queues into one queue?

Reference no: EM131801290

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