Times for a surgical procedure are normally distributed. There are two methods. MethodAhas a mean of 23 minutes and a standard deviation of 5 minutes, while methodBhas a mean of 27 minutes and a standard deviation of 2.5 minutes.

(a)Which procedure is preferred if the procedure must be completed within 24 minutes?

multiple choice 1

Method AMethod BEither Method

(b)Which procedure is preferred if the procedure must be completed within 34.5 minutes?

multiple choice 2

Method AMethod BEither Method

(c)Which procedure is preferred if the procedure must be completed within 31 minutes?

multiple choice 3

• Method A
• Method B
• Either Method