A trade magazine routinely checks the drive-through service times of fast-food restaurants. Upper A 95% confidence interval
Question:
Upper A 95% confidence interval that results from examining 783 customers in onefast-food chain's drive-through has a lower bound of 166.9 seconds and an upper bound of 169.9 seconds. What does this mean?
a. One can be 95% confident that the mean drive-through service time of this fast-food chain is between 166.9 seconds and169.9 seconds.
b. There is a 95%probability that the mean drive-through service time of this fast-food chain is between 166.9 seconds and 169.9 seconds.
c. The mean drive-through service time of this fast-food chain is 168.4 seconds 95% of the time.
d. One can be 95% confident that the mean drive-through service time of this fast-food chain is 168.4 seconds.
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a One can be 95 confident that the mean drive...View the full answer
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Related Book For 
Business Statistics In Practice
ISBN: 9780073401836
6th Edition
Authors: Bruce Bowerman, Richard O'Connell
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