Microeconomics
21st Edition
ISBN: 9781259915727
Author: Campbell R. McConnell, Stanley L. Brue, Sean Masaki Flynn Dr.
Publisher: McGraw-Hill Education
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Chapter 1.A, Problem 8AP
To determine
Calculation of slope.
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19-Which of the following depicts autocorrelation (serial correlation)?
O a. Cov(ut, us) = 0 for all t #s
b. Cov(ut, us) 0 for all t s
c. Cov(ut, us) =0 for all t= s
O d. Cov(ut us) 0 for all t=s
20- If OLS is used in the presence of autocorrelation, which of the following will
Suppose that when the interest rate on loans is 16 percent, businesses find it unprofitable to invest in machinery and equipment. However, when the interest rate is 14 percent, $5 billion worth of investment is profitable. At 12 percent interest, a total of $10 billion of investment is profitable. Similarly, total investment increases by $5 billion for each successive 2-percentagepoint decline in the interest rate. Describe the relevant relationship between the interest rate and investment in a table, on a graph, and as an equation. Put the interest rate on the vertical axis and investment on the horizontal axis. In your equation use the form i = a + bI, where i is the interest rate, a is the vertical intercept, b is the slope of the line (which is negative),and I is the level of investment.
The following is an equation of a straight line: (A): 5y-15x+35=0, What's the slope
of the equation (A), with its verbal description? *
Slope =3 , if x increases by 1 unit y increases by 3
Slope =1, if y increases by 1 unit x increases by 3
Slope =1, if x increases by 3 unit y increases by 1
Slope =3, if y increases by 1 unit x increases by 3
Chapter 1 Solutions
Microeconomics
Ch. 1.2 - Prob. 1QQCh. 1.2 - Prob. 2QQCh. 1.2 - Prob. 3QQCh. 1.2 - Prob. 4QQCh. 1.A - Prob. 1ADQCh. 1.A - Prob. 2ADQCh. 1.A - Prob. 3ADQCh. 1.A - Prob. 1ARQCh. 1.A - Prob. 2ARQCh. 1.A - Prob. 1AP
Ch. 1.A - Prob. 2APCh. 1.A - Prob. 3APCh. 1.A - Prob. 4APCh. 1.A - Prob. 5APCh. 1.A - Prob. 6APCh. 1.A - Prob. 7APCh. 1.A - Prob. 8APCh. 1 - Prob. 1DQCh. 1 - Prob. 2DQCh. 1 - Prob. 3DQCh. 1 - Prob. 4DQCh. 1 - Prob. 5DQCh. 1 - Prob. 6DQCh. 1 - Prob. 7DQCh. 1 - Prob. 8DQCh. 1 - Prob. 9DQCh. 1 - Prob. 10DQCh. 1 - Prob. 11DQCh. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Prob. 7RQCh. 1 - Prob. 1PCh. 1 - Prob. 2PCh. 1 - Prob. 3PCh. 1 - Prob. 4PCh. 1 - Prob. 5PCh. 1 - Prob. 6PCh. 1 - Prob. 7PCh. 1 - Prob. 8P
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- Refer to the information provided in above Figure: The slope of the line between Points A and B is: O a. 1.5. b. -0.67. O c. -1.5. O d. 0.67. پار Units of Y 2 D 3 6 B 9 Units of X 12arrow_forwardSuppose that Y=MX+b, where Y=consumption, b=consumption at zero income, M=slope, and X=income(i) Are Y and X positively related or are they negatively related?(ii) If graphed, would the curve for this equation slope upward or slope downward?(iii) Are the variables Y and X inversely related or directly related?(iv) What is the value of Y if b=10, M=.50, and X=200?(v) What is the value of X if Y=100, b=10, and M=.25?arrow_forward3. Suppose you won $15 on a lotto ticket at the local 7-Eleven and decided to spend all the winnings on candy bars and bags of peanuts. Candy bars cost $0.75 each while bags of peanuts cost $1.50 each. LO1.5 a. Construct a table showing the alternative combinations of the two products that are available. b. Plot the data in your table as a budget line in a graph. What is the slope of the budget line? What is the oppor- tunity cost of one more candy bar? Of one more bag ofarrow_forward
- FIGURE 2-2 C O O B Refer to Figure 2-2. The slope of curve D is 选择一项: O A. positive and changing. B. negative and changing. C. undefined. D. positive and constant. E. negative and constant. 4 Darrow_forwardFor each of the following scenarios, indicate whether the relationship between the two variables is positive or negative, as well as which line on the previous graph has a slope that reflects this type of relationship. Hint: The X-axis and Y-axis on the graph are not labeled intentionally. You need to substitute the variables from each scenario for the horizontal and vertical axis. For example, in the first scenario, X-axis should be labeled “ ice-cream" and Y-axis should be labeled "The temperature". Relationship options: positive, negative Line options: A, B, C, D True or False: Line D has a slope of infinity.arrow_forwardThe predicted value of y_i is Select one: O a. the value that y_i takes on when x_i equals 0. O b. the effect that a one-unit change in the dependent variable is expected to have on the independent variable, holding all else constant. O c. the value of y_i when the slope is multiplied a specific x_i and then that value is added to the intercept. O d. the observed value of the dependent variable that is associated with a specific value of the independent variable.arrow_forward
- The following graph contains four lines (A, B, C and D), each of which has a slope that is either positive, negative, zero, or infinite. Y-axis с B X A D X-axis ?arrow_forwardThe relationships between some economic variables w, y, and z and another economic variable, x, are shown in the graph above. Notice that the horizontal axis is labeled “x” since they are all functions of x but the vertical axis is not labeled. 1-1 Does the vertical axis need a label in order for you to be able to understand the graph?1-2What value of x minimizes w?arrow_forward5. Suppose a quadratic function is given by y = f(x) = x29x + 8. (a) Does this function represent an upward or downward facing parabola? Explain. Find the x - coordinate of the vertex (or the equation of the vertical line that intersects the parabola at the vertex) of the parabola.(b) Find the roots of the quadratic function. 1 (c) Using information from (a) and (b) draw a well labelled graph of the parabola (in particular, label the vertex and the roots).(d) In the same graph as (c), draw the parabola if it was instead represented by the function f(x) = x2-9x + 21. How many roots does this parabola have?6. Suppose an inverse demand function is given by p =10 - qd and an inverse supply function is given by p = 4+ 2qs. (a) What is the equilibrium price and quantity combination? (b) What happens when the price is above or below the equilibrium price? 7. How many solutions does a system of two equations have? Explain clearly and succinctly.arrow_forward
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