You have just completed a between-subjects experiment in which you will compare two groups. you notice that group 1 (n=27) has a mean=3.7 and group 2 (n=25) has a mean=2.2. one underlying assumption of our independent samples t-test is: σ_1^2 = σ_2^2 σ_1^2 σ_2^2 none of the above

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Mathematics

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28 July, 13:04

You have just completed a between-subjects experiment in which you will compare two groups. you notice that group 1 (n=27) has a mean=3.7 and group 2 (n=25) has a mean=2.2. one underlying assumption of our independent samples t-test is: σ_1^2 = σ_2^2 σ_1^2 σ_2^2 none of the above

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Answers (2)

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Julien Randall · Answer 1

The independent samples t-tests requires the assumption of homogeneity of variance which mean both the two groups have the same variance.

so,

σ₁² = σ₂²

Alec Pena · Answer 2

Option A σ₁² = σ₂²

Assumption of our independent sample test requires the assumption of homogeneity means both groups have the same variance.