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
Correct Answer:
Verified
Correct Answer:
Verified
Q70: Catherine Chao, Director of Marketing Research, is
Q71: In order to find values in the
Q72: If you need to estimate the population
Q73: When a statistic calculated from sample data
Q74: When the population standard deviation, σ, is
Q76: An assumption underlying the use of t-statistic
Q77: Elwin Osbourne, CIO at GFS, Inc., is
Q78: A researcher wants to estimate the proportion
Q79: A random sample of 64 items is
Q80: If the standard deviation, σ is known