Two separate samples receive different treatments. After treatment, the first sample has n = 5 with SS = 60, and the second has n = 9 with SS = 84. a. Compute the pooled variance for the two samples. b. Calculate the estimated standard error for the sample mean difference. c. If the sample mean difference is 7 points, is this enough to reject the null hypothesis using a two- tailed test with a = .05?

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6. Two separate samples receive different treatments. After treatment, the first sample has n =
5 with
SS = 60, and the second has n = 9 with SS = 84.
a. Compute the pooled variance for the two samples.
b. Calculate the estimated standard error for the sample mean difference.
c. If the sample mean difference is 7 points, is this enough to reject the null hypothesis using a two-
tailed test with a = .05?
Transcribed Image Text:6. Two separate samples receive different treatments. After treatment, the first sample has n = 5 with SS = 60, and the second has n = 9 with SS = 84. a. Compute the pooled variance for the two samples. b. Calculate the estimated standard error for the sample mean difference. c. If the sample mean difference is 7 points, is this enough to reject the null hypothesis using a two- tailed test with a = .05?
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