Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 minutes and a standard deviation of 4 minutes, while method B has a mean of 32 minutes and a standard of 2.0 minutes.

Which procedure is preferred if the procedure must be completed within 29 minutes?

Method A

Method B

Either Method

Which procedure is preferred if the procedure must be completed within 38.0 minutes?

Method A

Method B

Either Method

Which procedure is preferred if the procedure must be completed within 36 minutes?

Method A

Method B

Either Method