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Question
The time taken for guests to check out at a hotel front desk was measured over the course of several weeks. The management believes that the target time for checking out guests should be between 2 and 3 minutes with a target of 2.5 minutes. The data gathered for the actual process had a mean time of 2.75 minutes with a standard deviation of 0.45 minutes. The process capability index will be:
a. less than or equal to 1.
b. more than 3 but less than or equal to 5.
c. more than 4 but less than or equal to 5.
d. more than 5.
Answer
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