Calculate the pooled sample variance.
A)410.936
B)680.789
C)590.876
D)699.121

Name: Calculate the pooled sample variance. A)410.936 B)680.789 C)590.876 D)699.121
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Question

Quizplus · Accepted Answer

Since the sample sizes and variances are provided, we can use the formula for pooled sample variance:
Pooled sample variance = [(n1-1)s1^2 + (n2-1)s2^2] / (n1 + n2 - 2)
= [(20-1) * 432.2 + (16-1) * 689.5] / (20 + 16 - 2)
= 410.936. Therefore, the correct answer is A.

Calculate the Pooled Sample Variance