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Statistics - Independent Sample Test

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Group A:
26, 22,24,22,21,21,26,27,21,23,19

Group B:
5,4,5,7,9,7,9,10,9,6,5

Please do an independent sample t test by hand.

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The expert examines an independent sample test. A complete, neat and step-by-step solution is provided.

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Update:

The s1^2 and s2^2 that we have in the formula for the pooled estimate of standard deviation are nothing but the variances

of the two groups.

Solution:

Descriptive Statistics for Group A:

n1 = 11

Mean, x1-bar = 22.91

Standard deviation, s1 = 2.548

Descriptive Statistics for Group B:

n2 = 11

Mean, x2-bar = ...

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