One sample has n = 10 scores and a variance of s2 = 20, and a second sample has n = 15 scores and a ...

One sample has n = 10 scores and a variance of s2 = 20, and a second sample has n = 15 scores and a variance of s2= 30 . What can you conclude about the pooled variance for these two samples?
 
  a. It will be closer to 20 than to 30.
  b. It will be closer to 30 than to 20.
  c. It will be exactly halfway between 20 and 30.
  d. Cannot be determined without more information.

Question 2

One sample has a variance of s2= 10 and a second sample has a variance of s2= 6 . Which of the following most accurately describes the pooled variance for the two samples?
 
  a. Closer to 6 than to 10 c. Somewhere between 6 and 10
  b. Closer to 10 than to 6 d. Around 16

Question 3

One sample of n = 8 scores has a variance of s2= 6 and a second sample of n = 8 scores has a variance of s2 = 10 . If the pooled variance is computed for these two samples, then the value obtained will be ______.
 
  a. closer to 6 than to 10
  b. closer to 10 than to 6
  c. exactly halfway between 6 and 10
  d. cannot be determined without more information