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Unformatted text preview: MTB > ptwo c1 c2; SUBC> pooled; SUBC> confidence 90; SUBC> alternative -1. Test and CI for Two Proportions: Current, Former Event = Y Variable X N Sample p Current 73 120 0.608333 Former 86 120 0.716667 Difference = p (Current) - p (Former) Estimate for difference: -0.108333 90% upper bound for difference: -0.0306153 Test for difference = 0 (vs < 0): Z = -1.77 P-Value = 0.038...
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This note was uploaded on 02/14/2011 for the course STAT 250 taught by Professor Sims during the Spring '08 term at George Mason.
- Spring '08