P0 ha p p0 reject h0 if zstat z h0 p1 p2 0 ha p1

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: between Two Population Proportions Population Proportion test statistic upper tail test Hypothesis Tests lower tail test z STAT = p − p0 p0 ( 1− p0 ) n H0: p ≤ p0 Ha: p > p0 reject H0 if zSTAT > zα H0: p ≥ p0 Ha: p < p0 reject H0 if zSTAT < –zα H0: p = p0 Ha: p ≠ p0 two-tailed test reject H0 if zSTAT > zα/2 or if zSTAT < –zα/2 Recall from chapter 9 Hypothesis Tests about the Difference between Two Population Proportions Population Proportion test statistic z STAT = p − p0 p0 ( 1− p0 ) n Difference Between 2 Population Proportions p −p 1 2 zSTAT = 1 1 p( − p) + 1 n n2 1 Hypothesis Tests upper tail test H0: p ≤ p0 Ha: p > p0 reject H0 if zSTAT > zα H0: p1 – p2 ≤ 0 Ha: p1 – p2 > 0 reject H0 if zSTAT > zα lower tail test H0: p ≥ p0 Ha: p < p0 reject H0 if zSTAT < –zα H0: p1 – p2 ≥ 0 Ha: p1 – p2 < 0 reject H0 if zSTAT ≤ –zα H0: p = p0 Ha: p ≠ p0 two-tailed test reject H0 if zSTAT > zα/2 or if zSTAT < –zα/2 H0: p1 – p2 = 0 Ha: p1 – p2 ≠ 0 reject H0 if zSTAT ≤ – zα/2 or if zSTAT > zα/2 Hypothesis Tests about the Difference between Two Population Proportions SAFETY CHECK: When defining the difference in means D, be careful of the order of the difference to make sure that it corresponds correctly with your hypotheses. opulation Proportion P test statistic z STAT = p − p0 p0 ( 1− p0 ) n Difference Between 2 Population Proportions p −p 1 2 zSTAT = 1 1 p( − p) +...
View Full Document

Ask a homework question - tutors are online