Macroeconomics
13th Edition
ISBN: 9781337617390
Author: Roger A. Arnold
Publisher: Cengage Learning
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Chapter 18, Problem 9QP
To determine
Explain whether the given statement is agreeable or not and if it is agreeable, explain why.
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Eddie Clauer sells a wide variety of outdoor equipment and clothing. The company sells both through mail order and via the internet. Random samples of sales receipts
were studied for mail order sales and internet sales, with the total purchase being recorded for each sale. A random sample of 7 sales receipts for mail order sales
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$64.30 with a standard deviation of $28.25. Using this data, find the 90 % confidence interval for the true mean difference between the mean amount of mail order
purchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed.
Step 1 of 3: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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- 1. For the following utility functions, (i) calculate the MRS, (ii) show whether the MRS is constant, or diminishing, or increasing, (iii) calculate the degree of homogeneity, (iv) check the convexity of the Indifference Curve using the condition that for a function to be strict quasi-concave, it must be that f2f11-2f1f2f12+ ff22 < 0, (v) based on MRS's characteristics, draw an approximate Indifference Curve, and (vi) comment on the type of utility function. (a) U(x, y) = 3x + y (b) U(x, y)=√√x y (c) U(x, y)=√√x + y (d) U(x, y)=xy x+yarrow_forwardA 9R, where 1-b 1-b Question Two Consider the IS-LM Model. Let the IS equation be Y = (1b) is the marginal propensity to save, g is the investment sensitivity to interest rates, and A is an aggregate of exogenous variables. Let the LM equation be Y = +=R, where k and 1 are income and interest sensitivity of money demand, and Mo is real money balances. Mo k k It is given b = 0.7, g = 100, A = 252, k = 0.25, l = 200, and Mo 176. a) Utilize the given numbers to substitute the variables in the model, and then write down the IS-LM equation system in matrices form. b) Solve for the equilibrium values of Y and R using Cramer's Rule. (Note: Keep 2 digits after the decimal point.)arrow_forwardSuppose that a family's income is exactly the same as the poverty threshold. This family's income deficit would be and their ratio of income to poverty would be 130 0; 1 ○ 1 %3 030 Consider a family of four in 2008, whose poverty threshold is $22,024. If this family's total income was $16544, what would their income deficit be? Income deficit: $arrow_forward
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