Times for a repair project are normally distributed. There are two methods. Method A has a mean of 32 minutes and a standard deviation of 4 minutes, while method B has a mean of 36 minutes and a standard deviation of 2.0 minutes.

(a) Which project is preferred if the project must be completed within 34 minutes?

(b) Which project is preferred if the project must be completed within 42.0 minutes?

(c) Which project is preferred if the project must be completed within 40 minutes?