Times for a surgical procedure are normally distributed Ther

Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 23 minutes and a standard deviation of 5 minutes, while method B has a mean of 27 minutes and a standard deviation of 2.5 minutes.

Solution

a) Methode A, As the mean time is 23 minutes and the procedure must be completed in 24 minutes

b) Either Methode A or B, As procedure must be completed within 34.5 minutes

c) Methode B, As in methode B there is small standard devaition