MAarison of student's performance involved the total of n = 600 respondents. Two groups selected were: MLATH majors and and Computer Science majors. Individual performance was measured in a binary scale (ABOVE or BELOW average). The summaries are presented below. %3D Group Size ABOVE Proportion MATH X1 = 140 (f)1 = 140/200 = 0.7 %3D %3D n1 = 200 COMP Science X2 = 310 (p)2 = 310/400 = 0.775 %3D n2 = 400 %3D Pooled n = n1 + n2 = 600 X = X+X2 = 450 p = 450/600 = 0.75 %3D %3D %3D At the significance level, a = 0.05, do you have sufficient evidence that population proportions DIFFER? • Evaluate the test statistic • Specify critical value (or values) needed for this procedure. • State the Rejection Rule • Formulate your decision

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