2. The new downtown Hilton has documented that the average amount of time for room-service
del...
Mathematics, 28.02.2020 19:41 payloo
2. The new downtown Hilton has documented that the average amount of time for room-service
delivery is 24.2 minutes with a standard deviation of 8.7 minutes. For quality control, 20 random
deliveries were monitored and found to have a mean time of 21 minutes. Should the manager be
impressed?
Answers: 2
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