8.8 Assuming equal population variances, determine the number of degrees of freedom for each of the following:

Question:

a. nx = 16 s2x

= 30 ny = 9 s2y

= 36

b. nx = 12 s2x

= 30 ny = 14 s2y

= 36

c. nx = 20 s2x

= 16 ny = 8 s2y

= 25 8.9 Assuming equal population variances, compute the pooled sample variance s2p for part a through part c of Exercise 8.8.

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