Eco5earlyfinal06

# Eco5earlyfinal06 - Eco 5 Name: Section Final Exam I ( 12...

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Eco 5 Name: Section Final Exam I ( 12 points ) Shown below is a portion of a computer output for a regression analysis relating supply (Y in thousands of units) and unit price (X in thousands of dollars). ANOVA df SS Regression 1 354.689 Residual 39 7035.262 Coefficients Standard Error Intercept 54.076 2.358 X 0.029 0.021 a. What has been the sample size for this problem? b. Perform a t test and determine whether or not supply and unit price are related. Let α = 0.05. c. Perform and F test and determine whether or not supply and unit price are related. Let α = 0.05. d. Compute the coefficient of determination and fully interpret its meaning. Be very specific. e. Compute the coefficient of correlation and explain the relationship between supply and unit price. f. Predict the supply (in units) when the unit price is \$50,000. II ( 10 points ) Before the presidential debates, it was expected that the percentages of registered voters in favor of various candidates would be as follows. Percentages Democrats 48% Republicans 38% Independents 4% Undecided 10% After the presidential debates, a random sample of 1200 voters showed that 540

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## This note was uploaded on 04/01/2009 for the course ECON 5 taught by Professor Liu during the Spring '06 term at City College of San Francisco.

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Eco5earlyfinal06 - Eco 5 Name: Section Final Exam I ( 12...

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