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 ˆ = = n p = 0.65. 150 111 Y 2 2 2 ˆ = = n p = 0.74. 270 189 150 120 111 78 Y Y 2 1 2 1 ˆ = + + = + + = 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 10/13/2011 for the course STAT 409 taught by Professor Stephanov during the Fall '11 term at University of Illinois at Urbana–Champaign.
 Fall '11
 STEPHANOV

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