hw4sol - 1 = and 2 1 1 12 = = n ~ n pois X a = X E n =1.2 b...

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Homework 4 Solution Statistics103 Winter 2009
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(6-25) X : The rate of return on stocks ) , ( ~ 2 x x N X σμ 09 . 0 = x μ 03 . 0 = x σ p = P ( )= 12 . 0 > X ) 03 . 0 09 . 0 12 . 0 03 . 0 90 . 0 ( > X P = =0.1587 ) 1 ( > Z P Y : Numbers of stocks which have a return of more than 12% ) , 5 ( ~ p Bin Y ) 2 ( Y P =1- - ) 0 ( = Y P ) 1 ( = Y P = 0 5 1 5 0 ) 1 ( p p 4 1 ) 1 ( 1 5 p p
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Extra problem: X : # of occurrences of the claims for car accidents with total liability exceeding $100,000 in a year λ : the rate of the claims for car accidents with total liability exceeding $100,000 per month
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Unformatted text preview: 1 . = and 2 . 1 1 . 12 = = n ) ( ~ n pois X a) = ) ( X E n =1.2 b) = ) ( X Var n =1.2 c) ) 1 ( ) ( 1 ) 1 ( = = = > X P X P X P ! 1 2 . 1 ! 2 . 1 1 2 . 1 1 2 . 1 = e e 0.337...
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hw4sol - 1 = and 2 1 1 12 = = n ~ n pois X a = X E n =1.2 b...

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