One sample has n = 15 with SS = 1570, and a second sample has n = 15 with SS = 1650. a. Find the pooled variance for the two samples. b. Compute the estimated standard error for the sample mean differences (i.e. for the two groups). c. If the sample mean difference (i.e. M1 – M2) is 8 points, is this enough to indicate a significant difference for a two-tailed test at α = .05 level? d. If the sample mean difference (i.e. M1 – M2) is 12 points, is this enough to indicate a significant difference for a two-tailed test at α = .05 level?
One sample has n = 15 with SS = 1570, and a second sample has n = 15 with SS = 1650. a. Find the pooled variance for the two samples. b. Compute the estimated standard error for the sample mean differences (i.e. for the two groups). c. If the sample mean difference (i.e. M1 – M2) is 8 points, is this enough to indicate a significant difference for a two-tailed test at α = .05 level? d. If the sample mean difference (i.e. M1 – M2) is 12 points, is this enough to indicate a significant difference for a two-tailed test at α = .05 level?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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One sample has n = 15 with SS = 1570, and a second sample has n = 15 with SS =
1650.
a. Find the pooled variance for the two samples.
b. Compute the estimated standard error for the sample
(i.e. for the two groups).
c. If the sample mean difference (i.e. M1 – M2) is 8 points, is this enough to
indicate a significant difference for a two-tailed test at α = .05 level?
d. If the sample mean difference (i.e. M1 – M2) is 12 points, is this enough
to indicate a significant difference for a two-tailed test at α = .05 level?
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