Question

The pooled variance $sp^2$ is formed by combining information from two independent samples. If $s1^2 = 39$, $s2^2 = 25$, and $n1 = n2 = 12$ then $sp^2$ is equal to: Oa. 30 Ob. 45 Oc. 32 Od. 31

          The pooled variance $sp^2$ is formed by combining information from two independent samples. If $s1^2 = 39$, $s2^2 = 25$, and $n1 = n2 = 12$ then $sp^2$ is equal to:

Oa. 30
Ob. 45
Oc. 32
Od. 31

Added by Mary F.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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The pooled variance sp^2 is formed by combining information from two independent samples. If s1^2 = 39, s2^2 = 25, and n1 = n2 = 12 then sp^2 is equal to: O a. 30 O b. 45 0 C. 32 O d. 31