Final_Exam_Practice_Problems

Final_Exam_Practice_Problems - Final Exam Practice Problems...

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Final Exam Practice Problems Fall 2009 1. In developing a black-box model based on data of one dependent variable (y) and two independent variables (x 1 and x 2 ), the following model terms are considered: o b [intercept] 1 1 x b 2 2 x b 2 1 3 x x b 2 1 4 x b 2 2 5 x b 1 2 6 ln x x b How many different models could be constructed using any combination of the terms above? A model may or may not contain an intercept. 2. A certain type of component is packaged in lots of four. Let X represent the number of properly functioning components in a randomly chosen lot. Assume that the probability that exactly x components function is proportional to x ; in other words, assume that the probability mass function of X is given by: ݂ሺݔሻ ൌ ቄ ܿݔ ݔ ൌ 1,2,3, ݋ݎ 4 0 ݋ݐ݄݁ݎݓ݅ݏ݁ where c is a constant. a. Find the value of the constant c so that f(x) is a probability mass function. b. Find P(X=2). c.
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This note was uploaded on 04/25/2010 for the course CHEN 3010 at Colorado.

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Final_Exam_Practice_Problems - Final Exam Practice Problems...

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