hw2 - Gil Tal ECI 114 Gil Tal Homework Assignment 2 1 Fall...

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Gil Tal ECI 114 Gil Tal Fall 2002 Homework Assignment 2 1. Problem 2-64, p. 42. 40 castings lot 15 from a local supplier and 25 from the next state. Let A be the event that the first casting selected is from the local supplier Let B be the event that the second casting selected is from the local supplier Let C be the event that the third casting selected is from the local supplier a. 0461 . 0 38 39 40 13 14 15 ! 3 38 39 40 : ! 3 13 14 15 ! 3 ! 37 ! 40 ! 3 ! 12 ! 15 3 40 0 25 3 15 ) Pr( = × × × × = × × × × = × ÷ × = = C B A b. 0886 . 0 38 25 39 14 40 15 = × × c. 266 . 0 ! 3 ! 37 ! 40 ) ! 1 ! 24 ! 25 ! 2 ! 13 ! 15 ( 3 40 1 25 2 15 ) Pr( ' = × ÷ × × × = = C B A On part B the order matter; on part C it’s not. 2. Let O be the detection of an organic pollutant P b (O)=0.997 Let V be the detection of a volatile pollutant P b
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hw2 - Gil Tal ECI 114 Gil Tal Homework Assignment 2 1 Fall...

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