Daniellelovee
  • Daniellelovee
A
Mathematics
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chestercat
  • chestercat
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Daniellelovee
  • Daniellelovee
@mathmate
Daniellelovee
  • Daniellelovee
@satellite73
mathmate
  • mathmate
n1=45, p1=0.75 n2=60, p2=0.55 H0: P1=P2 Ha: P1!=P2 We will use a significant level of 0.10 and a two-tailed test. Pooled sample proportion p=(p1*n1+p2*n2)/(n1+n2)=0.6357 Standard error, SE=sqrt(p*(1-p)*(1/n1+1/n2))=0.09490 Test statistic, z=(p1-p2)/SE=2.1075 P(Z>z)=1-0.9824=0.0176 < 5% (two tail test) Therefore there is no enough evidence to support H0, and Ha P1!=P2 will be accepted. For more examples, see: http://stattrek.com/hypothesis-test/difference-in-proportions.aspx

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