Chapter 8, Section 2, Exercise 042 Consider the data with analysis shown in the following computer output: Level N Mean StDev A 5 10.400 2.706 B 5

Chapter 8, Section 2, Exercise 042

Consider the data with analysis shown in the following computer output:

Level N Mean StDev

A 5 10.400 2.706

B 5 16.800 2.168

C 5 10.800 2.387

Source DF SS MS F P

Groups 2 128.53 64.27 10.87 0.002

Error 12 70.88 5.91

Total 14 199.41

What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means?

A. The pooled standard deviation is= 

B. degrees of freedom=

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