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If We Are Testing for the Difference Between the Means $n _ { 1 } = 20 \text { and } n _ { 2 } = 20$

Question 41

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If we are testing for the difference between the means of 2 independent populations presuming equal variances with samples of $n _ { 1 } = 20 \text { and } n _ { 2 } = 20$ , the number of degrees of freedom is equal to

A) 39.
B) 38.
C) 19.
D) 18.

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If We Are Testing for the Difference Between the Means n1=20 and n2=20n _ { 1 } = 20 \text { and } n _ { 2 } = 20n1​=20 and n2​=20

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If We Are Testing for the Difference Between the Means $n _ { 1 } = 20 \text { and } n _ { 2 } = 20$

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