The article "Uncertainty and Climate Change" (G. Heal and B. Kriström, Environmentaland Resource Economics, 2002:3–39) considers three scenarios, labeled A, B, and C, for theimpact of global warming on income. For each scenario, a probability mass function for theloss of income is specified. These are presented in the following table.ProbabilityLoss (%)Scenario AScenario BScenario C0.650.650.6520.240.20.240.1100.01150.10.10.01200.0525 Assume that the probabilities that each of the three scenarios occursare P(A) = 0.20, P(B) = 0.30, and P(C) = 0.50.Find the probability that scenario A occurs and that the loss is 5%.b.a.Find the probability that the loss is 5%.Find the probability that scenario A occurs given that the loss is 5%.C.

a. From the given probability distribution table, the probability that scenario A occurs and the…

Answered: The article "Uncertainty and Climate…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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2A) Consider the following information about Stock A: Economic State Probability Return Recession 25% -10% Normal 35% 15% Expansion 40% 25% Calculate the expected return, the variance, standard deviation, and coefficient of variation for this stock. Interpret your answers.
A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). I II III 49.6 55.7 39.3 43.5 24.7 37.8 32.7 41.9 10.1 27.9 29.1 32.3 38.6 39.1 15.9 36.7 42.9 20.9 Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 1% level of significance. (b) Find SSTOT, SSBET, and SSW and check that SSTOT = SSBET + SSW. (Use 3 decimal places.) SSTOT = SSBET = SSW = Find d.f.BET, d.f.W, MSBET, and MSW. (Use 3 decimal places for MSBET, and MSW.) dfBET = dfW = MSBET = MSW = Find the value of the sample F statistic. (Use 3 decimal places.)What are the degrees of freedom? (numerator) (denominator) Make a summary table for your ANOVA test. Source…
4
A random sample of 10 economists produced the following forecasts for percentage growth in real gross domestic product in the next year:2.2 2.8 3.0 2.5 2.4 2.6 2.5 2.4 2.7 2.6Use unbiased estimation procedures to find point estimates for the following:a. The population meanb. The population variancec. The variance of the sample meand. The population proportion of economists predicting growth of at least 2.5% in real gross domestic product
List weaknesses of this possible scorecard characteristic and of its data collection.
A researcher is interested in determining if the model used for the distribution of main economic concerns in the year 2003 for residents in a certain county can still be used in the year 2004. A sample of 370 residents from that county was surveyed in 2004. The following table displays the model for the distribution of economic concerns for the year 2003 and the observed number of sampled respondents in the survey for the same economic concerns for the year 2004. Economic concern 1: Jobs 2: Medical care 4: Housing Total 3: Higher education Model from 2003 5% 36% 27% 32% 100% Counts in 2004 25 138 116 91 370 Under the null hypothesis that the model from the previous year can still be used, what is the distribution of the chi-square statistic? ○ x ²(2) O x ²(3) O x ²(4) O x²(1)
O Mastering Biology L.. YouTube A random sample of companies in electric utilities (1), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). II II 49.8 55.3 38.6 43.5 25.3 37.3 32.2 41.9 10.1 27.3 29.4 32.6 38.4 39,8 15.8 36.7 42.2 20.5 Shall we reject or not reject the claim that there is no difference in population mean annual profits per ermployee in each of the three types of companies? Use a 1% level of significance. (a) What is the level of significance? State the null and alternate hypotheses. O Ho: M1 - 2 - u3; H;: At least two means are equal. O Ho: H1 = 2 = Hai H: Exactly two means are equal. O Ho: H1 2 - M3; H: All three means are different. O Ho: - iz - a; H: Not all the means are equal. (b) Find SS7OT, SSpET, and SSw and check that SSTOT- SSoCT + SSw. (Use 3 decimal places.) SSTOT SSBET = SSw- Find d.f. BET, d.f.w. MSBET, and MSw. (Use 3 decimal places for MSBET, and MSw.)…
Sales of industrial vacuum cleaners at Yarena Supply CO. over the past 13 months are as follows: Sales in P1,000 Month Sales in P1,000 Month 11 January 14 August 14 February 17 September 15 March 12 October 10 April 14 November 15 May 16 December 17 June 11 January 11 July Using a moving average with three periods, determine the demand for vacuum cleaners for next February?
A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). I II III 49.3 55.4 38.7 43.3 24.8 37.9 32.5 41.2 10.4 27.7 29.4 32.3 38.5 39.8 15.8 36.3 42.3 20.7 Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 1% level of significance. (b) Find SSTOT, SSBET, and SSW and check that SSTOT = SSBET + SSW. (Use 3 decimal places.) SSTOT = SSBET = SSW = Find d.f.BET, d.f.W, MSBET, and MSW. (Use 3 decimal places for MSBET, and MSW.) dfBET = dfW = MSBET = MSW = (c) Find the value of the sample F statistic. (Use 3 decimal places.) (d) What are the degrees of freedom? (e) Make a summary table for your ANOVA test.
A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). I II III 49.9 55.3 39.3 43.4 25.1 37.1 32.2 41.3 10.9 27.5 29.8 32.5 38.2 39.5 15.4 36.8 42.2 20.1 Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 10% level of significance. (a) What is the level of significance? (b) Find SSTOT, SSBET, and SSW and check that SSTOT = SSBET + SSW. (Use 3 decimal places.) SSTOT = ? SSBET = ? SSW = ? Find d.f.BET, d.f.W, MSBET, and MSW. (Use 3 decimal places for MSBET, and MSW.) dfBET = ? dfW = ? MSBET = ? MSW = ? Find the value of the sample F statistic. (Use 3 decimal places.)What are the degrees of freedom??(numerator)?(denominator)(c) Find the P-value of the sample test statistic. (Use…
Asian economies impact some of the world's largest populations. The growth of an economy has a big influence on the everyday lives of ordinary people. Are Asian economies changing? A random sample of 15 Asian economies gave the following information about annual percentage growth rate. Region 1 2 3 4 5 6 7 8 Modern Growth Rate % 4.6 2.9 7.6 2.4 0.3 5.5 2.7 4.8 Historic Growth Rate 3.5 1.3 7.1 5.3 3.5 6.4 3.6 8.4 Region 9 10 11 12 13 14 15 Modern Growth Rate % 4.1 5.6 6.5 3.8 3.4 0.6 7.9 Historic Growth Rate 6.8 7.8 6.1 1.3 1.2 2.7 5.7 Does this information indicate a change (either way) in the growth rate of Asian economies? Use a 10% level of significance. (a) What is the level of significance? (b) Compute the sample test statistic. (Round to two decimal places) (c) Find th P Value of the sample test statistic. (Round to four decimal places)
Consider the following table: Severe recession Mild recession Normal growth Boom Scenario Mean return Variance Covariance Probability 0.05 0.25 0.40 0.30 % Stock Fund Rate of Return Required: a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. Round "Mean return" value to 1 decimal place and "Variance" to 2 decimal places.) -30% -108 158 20% Bond Fund Rate of Return. -98 15% 8% -58 b. Calculate the value of the covariance between the stock and bond funds. (Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.)

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