Comparison of student's performance involved the total of n = 600 respondents. Two groups selected were: Undergraduate and Graduate. Individual performance was measured in a binary scale (Pass or Fail). The summaries are presented below. Group Size Pass Proportion Graduate n1 = 200 X = 139 (p)1 = 139/200 = 0.6950 Undergraduate n2 = 400 X2= 311 (f)2 = 311/400 = 0.7775 Pooled n = nj + n2 = 600 X = X1+ X2 = 450 p= 450/600 = 0.75 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 Solution
Comparison of student's performance involved the total of n = 600 respondents. Two groups selected were: Undergraduate and Graduate. Individual performance was measured in a binary scale (Pass or Fail). The summaries are presented below. Group Size Pass Proportion Graduate n1 = 200 X = 139 (p)1 = 139/200 = 0.6950 Undergraduate n2 = 400 X2= 311 (f)2 = 311/400 = 0.7775 Pooled n = nj + n2 = 600 X = X1+ X2 = 450 p= 450/600 = 0.75 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 Solution
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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