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. prtesti 105 0.286 97 0.309 Two-sample test of proportions x: Number of obs = 105 y: Number of obs = 97 Mean Std. Err.

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. prtesti 105 0.286 97 0.309 Two-sample test of proportions x: Number of obs = 105 y: Number of obs = 97 Mean Std. Err. Z P> Z [95% Conf. Interval] .286 . 0440999 .1995658 .3724342 .309 . 0469172 .2170439 . 4009561 diff -.023 .0643896 - .1492014 .1032014 under Ho: . 0643532 -0.36 0.721 diff = prop(x) - prop(y) Z = -0.3574 Ho: diff = 0 Ha: diff 0 Pr (Z |z|) = 0.7208 Pr (Z > z) = 0.6396

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