Please do an independent sample t test by hand.
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.
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 = …
The expert examines an independent sample test. A complete, neat and step-by-step solution is provided.