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Consider the data with analysis shown in the following computer output: Level N Mean StDev A 5 10.500 2.722 B 5 16.800 2.168 C 5
Consider the data with analysis shown in the following computer output:
| Level | N | Mean | StDev |
|---|---|---|---|
| A | 5 | 10.500 | 2.722 |
| B | 5 | 16.800 | 2.168 |
| C | 5 | 10.800 | 2.387 |
| Source | DF | SS | MS | F | P |
|---|---|---|---|---|---|
| Groups | 2 | 126.30 | 63.15 | 10.63 | 0.002 |
| Error | 12 | 71.23 | 5.94 | ||
| Total | 14 | 197.53 |
What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means? Round your answer for the pooled standard deviation to two decimal places.
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