Macroeconomics
13th Edition
ISBN: 9781337617390
Author: Roger A. Arnold
Publisher: Cengage Learning
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Question
Chapter 3, Problem 20QP
(a)
To determine
Identify the changes in the supply of personal computers.
(b)
To determine
Identify the changes in the supply of personal computers.
(c)
To determine
Identify the changes in the supply of personal computers.
(d)
To determine
Identify the changes in the supply of personal computers.
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Suppose that (Y, X) satisfy the assumptions specified here. A random sample of n = 498 is drawn and yields
Ŷ= 6.47 + 5.66X, R2 = 0.83, SER = 5.3
(3.7)
(3.4)
Where the numbers in parentheses are the standard errors of the estimated coefficients B₁ = 6.47 and B₁ = 5.66 respectively.
Suppose you wanted to test that B₁ is zero at the 5% level. That is,
Ho: B₁ = 0 vs. H₁: B₁ #0
Report the t-statistic and p-value for this test.
Definition
The t-statistic is
(Round your response to two decimal places)
☑
The Least Squares Assumptions
Y=Bo+B₁X+u, i = 1,..., n, where
1. The error term u; has conditional mean zero given X;: E (u;|X;) = 0;
2. (Y;, X¡), i = 1,..., n, are independent and identically distributed (i.i.d.) draws from
i
their joint distribution; and
3. Large outliers are unlikely: X; and Y, have nonzero finite fourth moments.
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Tasks
Exercise 1
Assess the following functions:
1. f(x)= x2+6x+2
2.f '(x)=10x-2x2+5
a. Find the stationary points. (5 marks)
b. Determine whether the stationary point is a maximum or minimum. (5 marks)
c. Draw the corresponding curves (5 marks)
Chapter 3 Solutions
Macroeconomics
Ch. 3.1 - Prob. 1STCh. 3.1 - Prob. 2STCh. 3.1 - Prob. 3STCh. 3.1 - Prob. 4STCh. 3.2 - Prob. 1STCh. 3.2 - Prob. 2STCh. 3.2 - Prob. 3STCh. 3.3 - Prob. 1STCh. 3.3 - Prob. 2STCh. 3.3 - Prob. 3ST
Ch. 3.3 - Prob. 4STCh. 3.3 - Prob. 5STCh. 3 - Prob. 1QPCh. 3 - Prob. 2QPCh. 3 - Prob. 3QPCh. 3 - Prob. 4QPCh. 3 - Prob. 5QPCh. 3 - Prob. 6QPCh. 3 - Prob. 7QPCh. 3 - Prob. 8QPCh. 3 - Prob. 9QPCh. 3 - Prob. 10QPCh. 3 - Prob. 11QPCh. 3 - Prob. 12QPCh. 3 - Prob. 13QPCh. 3 - Prob. 14QPCh. 3 - Prob. 15QPCh. 3 - Prob. 16QPCh. 3 - Prob. 17QPCh. 3 - Prob. 18QPCh. 3 - Prob. 19QPCh. 3 - Prob. 20QPCh. 3 - Prob. 21QPCh. 3 - Prob. 22QPCh. 3 - Prob. 23QPCh. 3 - Prob. 24QPCh. 3 - Prob. 25QPCh. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Prob. 28QPCh. 3 - Prob. 1WNGCh. 3 - Prob. 2WNGCh. 3 - Prob. 3WNGCh. 3 - Prob. 4WNGCh. 3 - Prob. 5WNGCh. 3 - Prob. 6WNGCh. 3 - Prob. 7WNGCh. 3 - Prob. 8WNGCh. 3 - Prob. 9WNG
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