WechatIMG4.jpeg - Eco 321 HWI chengrui Wu ID 11132 7 724 O 1by Let x has a Bernoulli randon variable so that x takes the values When paresponds preder

# WechatIMG4.jpeg - Eco 321 HWI chengrui Wu ID 11132 7 724 O...

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Unformatted text preview: Eco 321 HWI chengrui Wu ID : 11132 7 724 O 1by Let x has a Bernoulli randon variable so that x takes the values When paresponds preder small class with a and probability p and value o of one responds prefer large dassel with a probability 9= 1-p Elx ) = P Var ( x 1 = P ( 1 - P ) N N NP N = P since E (Xil = P for all ; and Varcp 1 = var ( Sixi ) WP ( IP ) - P(1 - P ) X's are independent and N N Varixil . D(1- p)vi aMT = ( 9) 2000 = 0.6 standard Error : JP (1 p) 0 . 6 x 0.4 = 0. 0 1 095...
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