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Unformatted text preview: Find the pvalue of the appropriate test. Claim: p A < p B H : p A = p B vs. H 1 : p A < p B 120 78 Y 1 1 1 = = n p = 0.65. 150 111 Y 2 2 2 = = n p = 0.74. 270 189 150 120 111 78 Y Y 2 1 2 1 = + + = + + = n n p = 0.70. Test Statistic: Z = + 150 1 120 1 30 . 70 . 74 . 65 . = 1.60 . Pvalue: Left tailed. Pvalue = P( Z < 1.60 ) = 0.0548 ....
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This note was uploaded on 02/15/2012 for the course STAT 400 taught by Professor Kim during the Spring '08 term at University of Illinois, Urbana Champaign.
 Spring '08
 Kim
 Statistics, Probability

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