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If we are testing for the difference between the means of two related (paired) samples with samples of n = 20 and n2 = 20,

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If we are testing for the difference between the means of two related (paired) samples with samples of n = 20 and n2 = 20, the number of degrees of freedom (df) is equal to: Select one: O a. df = 18 Ob. df = 39 O c. df = 38 Od. df = 19

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