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Eight operating rooms were tested to see if a bacterial soap has reduced the contamination rates. The data shows the contamination in each room the
- Eight operating rooms were tested to see if a bacterial soap has reduced the contamination rates. The data shows the contamination in each room the year before and the year after using the soap. What do you conclude at .05 significance level
Before: 6.6 6.5 9 10.3 11.2 8.1 6.3 11.6
After: 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2
- Hypothesis being tested: M1=M2? Or should it be a one tail test?
- Critical Value
- What is the appropriate calculated T or Z
- Statistical conclusion
- Practical conclusion. Does the contamination significantly change?
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