For each of the following, calculate the pooled variance and the estimated standard error for the sample mean difference. The first sample has n =4 scores and a variance of s 2 = 55, and the second...


For each of the following, calculate the pooled variance and the estimated standard error for the sample mean difference.




  1. The first sample has n =4 scores and a variance of s2
    = 55, and the second sample has n = 6 scores and a variance of s2
    = 63.

  2. Now the sample variances are increased so that the first sample has n ‑ 4 scores and a variance of s2
    = 220, and the second sample has n = 6 scores and a variance of s2
    = 252.

  3. Comparing your answers for parts a and b, how does increased variance influence the size of the estimated standard error



Jun 08, 2022
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