Times for a surgical procedure 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 procedure is preferred if the procedure must be completed within 34 minutes?

multiple choice 1

• Method A
• Method B
• Either Method

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

multiple choice 2

• Method A
• Method B
• Either Method

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

multiple choice 3

• Method A
• Method B
• Either Method