What is the critical value and critical ratio

This is a 6-step hypothesis question

**Assigned: An experimental surgical procedure is being studied as an alternative to the existing method. Twelve surgeons perform the operation on two different patients matched by sex, age and other relevant factors. The time to complete the procedure for each technique is listed in the table below.

Problem Definition: Determine whether or not the new procedure is faster than the existing procedure. Alpha is set at .01. Utilize the six-step process to test the hypothesis the new procedure is faster the than the old procedure. One tailed test to the left.

Time to Complete

1

2

3

4

5

6

7

8

9

10

11

12

New Procedure

14

12

14

13

10

13

12

10

13

13

18

27

Old Procedure

29

32

30

32

39

31

27

29

23

28

26

29

Utilize all three techniques in your conclusion (critical value/critical ratio, confidence interval and pvalue. Include the numbers from the Minitab output for each technique or points will be deducted.