H$_0$ states that $\mu_1 - \mu_2 = 0$ which simplifies the independent-samples $t$ test formula by removing _______. O $\frac{\sigma}{\sqrt{n}}$ O $\bar{x}_2$ O $(\bar{x}_1 - \bar{x}_2)$ O $(\mu_1 - \mu_2)$
Added by Deborah E.
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The general formula for an independent-samples t-test is: $t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2}}}$ (for unequal variances) or $t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{s_p \sqrt{\frac{1}{n_1} Show more…
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