Times for a surgical procedure are normally distributed. There are two methods. MethodAhas a mean of 21 minutes and a standard deviation of 5 minutes, while methodBhas a mean of 25 minutes and a standard deviation of 2.5 minutes.

(a)Which procedure is preferred if the procedure must be completed within 23 minutes?

multiple choice 1

a. Method A

b. Method B

c. Either Method

(b)Which procedure is preferred if the procedure must be completed within 32.0 minutes?

a. Method A

b. Method B

c. Either Method

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

a. Method A

b. Method B

c. Either Method