Standard Deviation
Statistics – Standard Deviation
July 9, 2019The mean age at which men in the United States marry for the first time
July 9, 2019Recently, the manager at Micron conducted a study of the time customers spent on hold waiting for a Micron representative to become available. The datashowed that the distribution of time spent on hold is approximately normally distributed, with a meanof 18 minutes and a standard deviationof 4 minutes.
Question: The service manager wants to make sure that no one waits longer than 18 minutes. Determine the standard deviation that would be required to meet this goal?
A normal distribution is symmetrical around the mean. How spread out it is depends on the standard deviation (if the standard deviation is small, the distribution will be tall and skinny, and if …
The solution determines the standard deviation that would be required so that no one waits for longer than 18 minutes waiting for a Micron representative to become available.
