Question: Chapter 8, Section 2, Exercise 042 Consider the data with analysis shown in the following computer output: Level N Mean StDev A 6 10.500 2.700

Chapter 8, Section 2, Exercise 042

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

Level N Mean StDev

A 6 10.500 2.700

B 5 16.800 2.168

C 4 10.800 2.387

Source. DF SS MS F P

Groups. 2 127.53 63.77 10.58 0.002

Error 12 72.34 6.03

Total 14 199.87

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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