For each of the following, calculate the standard error of the difference (left(s mathrm{X}^{-} 1-mathrm{X}^{-} ight.) (2)).

For each of the following, calculate the standard error of the difference \(\left(s \mathrm{X}^{-} 1-\mathrm{X}^{-}\right.\) \(2)\).

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a. N = 35, s = 1.50, N = 35, $2 = 3.25 b. N = 4, s = 4.30, N = 4, 52 = 2.10 c. N =23, s = 8.10, N = 23, $2 = 7.50 d. N = 20, s = 1.20, N = 20, s = 1.75