SOLUTION: One sample has a variance of s2 = 10 and a second sample has s2 = 20. If the pooled variance is computed for these two samples, then the value obtained will be:
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Question 1185627: One sample has a variance of s2 = 10 and a second sample has s2 = 20. If the pooled variance is computed for these two samples, then the value obtained will be:
Answer by CPhill(2189) (Show Source): You can put this solution on YOUR website!
The pooled variance will be *between* the two sample variances (10 and 20). It's a weighted average of the two, where the weights are the degrees of freedom (n-1) of each sample. Therefore, the pooled variance will be somewhere between 10 and 20, but we can't determine the exact value without knowing the sample sizes.
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