Question: Chapter 8, Section 2, Exercise 039 Your answer is partially correct.Try again.Consider the data with analysis shown in the following computer output: Level N Mean

Chapter 8, Section 2, Exercise 039

Your answer is partially correct.Try again.Consider the data with analysis shown in the following computer output:

Level N Mean StDev

A 6 86.300 5.020

B 5 76.167 6.555

C 6 80.000 9.230

D 7 69.333 6.154

Source DF SS MS F P

Groups 3 789.41 263.14 6.64 0.003

Error 20 792.12 39.61

Total 23 1581.53

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.

The pooled standard deviation is

.

degrees of freedom

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