statsexam2 10b

statsexam2 10b - Economic Statistics Exam 2 Last name: June...

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Last name: June 2, 2010 First name: PID: Please sign that you abide by the honor pledge: This exam contains ten short answer questions (worth 6 points each) and two long answer questions (worth 20 points each). Please answer in the space provided; if you need more room, indicate clearly that the answer is continued on the back of the page. In all problems where you need to make a calculation, simplify your answer as much as possible. Show your work clearly to be eligible for partial credit. Some PDFs: Some probabilities: f ( x ) = 1 2 πσ 2 e ( X μ ) 2 2 σ 2 P [ x a ] = 1 e λ a f ( x ) = 1 u P [ x ] = x e x ! f ( x ) = e x P [ x ] = n ! x !( n x )! p x (1 p ) n x 1. The random variable X between 15 and 20? 2. In a normal distribution, what fraction of the population is within 2.5 standard deviations of the mean?
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statsexam2 10b - Economic Statistics Exam 2 Last name: June...

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