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1?. The sample proportion of males who scored at level 1: 2= Please keep 4 decimals. 18. The pooled estimate of the common proportion of

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1?. The sample proportion of males who scored at level 1: 2= Please keep 4 decimals. 18. The pooled estimate of the common proportion of all students who scored at level 1 (see p. 48?, text) It): "1:51 +n21 : X1+X2 = ! +312 3r11+i12 19. The 2 test statistic z = Jig: Please keep at least 2 decimals. 1 1 13(1- P) + \"I \"2

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