Math Solutions

[Solution] In a recent 2012 study, the McDonald’s Franchise on Northern Lights Blvd. in Anchorage, Alaska had a mean service time of 165 seconds at Its

Question: In a recent 2012 study, the McDonald’s Franchise on Northern Lights Blvd. in Anchorage, Alaska had a mean service time of 165 seconds at Its drive-through service

window, which was the 4" best In the Industry. The speed with which customers are served is of critical importance to the success of the service. Suppose that Mc Donald's

has embarked on a quality improvement effort to streamline service time and has developed Improvements to the service process at the drive-through. The new process was tested at 25 different drive-through locations. The new mean service drive-through time was 151 seconds with a standard deviation of 20 seconds. Test the null hypothesis

at a one percent significance level is that the new drive-through process is more efficient. Assume the population standard deviation is unknown.

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