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final_stat104_fall10v9

# final_stat104_fall10v9 - Statistics 104 Quantitative...

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1 Statistics 104: Quantitative Methods for Economists Fall 2010 Final Examination Directions This exam is open book/open notes. Calculators are allowed but not laptop computers. The exam will end 3 hours after it begins. The exam is divided into two parts. The first part is multiple choice and true/false. Please answer these questions on the exam by circling the best answer (some rounding occurs in several places). The second part of the exam consists of several problems. Please answer these problems in the space provided on the exam (you may use the backs of the sheets if necessary). You will get partial credit for these problems provided that your answers are organized and legible so that your train of thought can be easily followed. Good Luck By Printing my name below I acknowledge that Harvard has an honor code and that I will adhere to it. Failure to abide by the honor code could result in failing this course and having to wash Professor Parzen’s car with my toothbrush. NAME : ______________________________________________ (-50 if not printed) Question Points Obtained Multiple Choice 100 Long 1 5 Long 2 18 Long 3 12 Long 4 12 Long 5 18 Total 165

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2 Multiple Choice (3 points each) 1) The standard deviation of the normal distribution shown above is approximately a) σ = 100 b) σ = 90 c) σ = 15 d) σ = 10 2) As the degrees of freedom for the t distribution increase, the distribution approaches 3) Which of the following statements about the Central Limit Theorem (CLT) is correct?
3 An elevator serving a hospital is designed to hold up to 15 passengers and has a maximum safe capacity of 2440 pounds. The weight of passengers who use the elevator is normally-distributed with an average of 149 pounds and a standard deviation of 20 pounds. 4) What is the probability that a single passenger on the elevator weighs between 140 and 150 pounds?

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final_stat104_fall10v9 - Statistics 104 Quantitative...

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