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Oregon EC 320 – Department of Economics

University of OregonDepartment of EconomicsFall 2016: 2024 – Do my homework – Help write my assignment onlineHomework 1EC 320: EconometricsDue in Lab Week of 10/3Please type or write neatly your answers to the following questions on a separate sheet of paper.Points may be deducted for assignments that are a big mess, are unstapled, or are otherwise a painto deal with. This assignment is due at the beginning of your scheduled lab. Include yourscheduled lab time on your written homework. Only a subset of questions will be graded but a fullsolution key will be provided.1) You are drawing cards out of a 30 card deck. The following table reports the value of eachtype of card and the frequency of each type.Value Frequency1627364358a.) Are the card values discrete or continuousb.) What is the expected value of single draw?c.) Is the expected value you found a value you could actually draw? Does it have to be?d.) What is the population variance?e.) What is the population standard deviation?f.) Draw the probability distribution of the cards.12) You are attempting to determine whether the price of Dell computers is related to the priceof Apple computers. Over the course of a year, you observe the following prices:Dell Apple$1000 $2000$1200 $2100$1300 $2400$1250 $2500$1100 $2050Assume this is the entire population of prices.a.)b.)c.)d.)e.)What is the mean price for each type of cmputer?What is the covariance between the price of Dell and the price of Apple?What is the variance in the price of Dell?What is the variance in the price of Apple?What is the correlation between Dell and Apple?3) Now assume the prices given in 2.) represent a sample rather than the entire population.a.) What is the sample variance in the price of Dell?b.) What is the sample variance in the price of Apple?c.) What is the sample covariance between the price of Dell and the price of Apple?4) Suppose you have 30 observations from a population that has a normal distribution withvariance 25. The sample mean is 15. You want to test whether your sample is significantlydifferent from 13.a.)b.)c.)d.)e.)Write down the null and alternative hypothesesCalculate your Z statisticCan you reject the null at the 5% significance level? (Report your critical value)Can you reject the null at the 1% significance level? (Report your critical value)Report the 95% confidence interval for your sample.25) Stata Exercise: A stock’s price-earnings ratio (P/E) ratio is the per-share price of it’sstock divide by the company’s annual profit per share. The P/E ratio for the stock marketas a whole is used by some analysts as a measure of whether stocks are cheap or expensive,in comparison with other historical periods. The Stata dataset, PEratio.dta, gives annualP/E ratios for the S&P 500. Load this data into Stata to answer the following questionsand include any relevant Stata output in your answers.a.) What is the sample mean and standard deviation of the P/E ratio from 1980-2015 – Research Paper Writing Help Service?b.) Plot a histogram of the P/E ratio and include this in your problem set answers.c.) Find all the values of the P/E ratio that are greater than two sample standarddeviations from the mean. Report these values and their corresponding years. Now find allthe values of the P/E ratio that are less than two standard deviations from the samplemean. Report these values and their corresponding years.d.) The U.S. economy was in recession in the years 1980, 1981, 1982, 1990, 2001, 2008 – Affordable Custom Essay Writing Service | Write My Essay from Pro Writers, and2009. Compute the sample mean of the P/E ratio both during recession years and duringexpansion years.3

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