In testing for differences between the means of 2 related populations where the variance of the differences is unknown, the degrees of freedom are a) $n - 1$.
b) $n _ { 1 } + n _ { 2 } - 1$.
c) $n _ { 1 } + n _ { 2 } - 2$.
d) $n - 2$.

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The Answer of In testing for differences between the means of 2 related populations where the variance of the differences is unknown, the degrees of freedom are a) $n - 1$.
b) $n _ { 1 } + n _ { 2 } - 1$.
c) $n _ { 1 } + n _ { 2 } - 2$.
d) $n - 2$.

In Testing for Differences Between the Means of 2 Related n−1n - 1n−1

In Testing for Differences Between the Means of 2 Related $n - 1$