A new scrub method is being issued for operating rooms at kindred hospital prior to issuing the new technique they measured the contamination levels of the surgeons with their previous scrub technique, they then measured it again later with the new technique. The following contamination levels were reported for the 4 hospital surgeons.
| Surgeons |
|
|
|
|
|
A |
B |
C |
D |
| Old Technoque |
6.6 |
9.0 |
11.2 |
6.3 |
| New Technique |
6.8 |
7.4 |
8.1 |
3.4 |
At a significance level of .05, can we conclude that the contamination measurements are lower with the new scrub technique?
What is the null hypothesis?
What is the alternative hypothesis?
What test statistic should you use?
What is the calculated value of the test statistic?
What is the critical value of the test statistic?
What is the decision to fail or reject which hypothesis?