The length of time to do a cable installation by Multi-cable Inc is normally distributed with a meanof 42.8 minutes and a standard deviationof 6.2 minutes.
Multicable wants to establish how long a standard cable install appointment should be to insure that all of the work will be completed during the appointment 80% of the time. How long would you recommend the standard cable installation appointment be?
This solution provides calculations in Excel for determining standard cable installation appointments using mean and standard deviation data.