Brian Vanecek, VP of Operations at Portland Trust Bank, Is

question 75

Multiple Choice

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers.Accordingly, his staff recorded the waiting times for 45 randomly selected walk-in customers, and calculated that their mean waiting time was 15 minutes.If Brian concludes that the average waiting time for all walk-in customers is 15 minutes, he is using a ________.

• A)a range estimate
• B)a statistical parameter
• C)an interval estimate
• D)a point estimate
• E)an exact estimate

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