Homework Answers
Hi
equation is E(y) = b0 + b1x1 + b2x2+ b3x1x2
put x2 =0
so E(y) = b0 + b1x1 + 0 +0
E(y) = b0 + b1x1
which is same equation as y = mx+ c
where m= slope
So slope = b1
hence 3rd option is correct here
Thanks
Add Answer to:
Question 4 1 pts Suppose that we are given the following model, where x1 and 2...
3. (20 pts) Suppose that we have 4 observations for 3 variables y , x\, X2...
3. (20 pts) Suppose that we have 4 observations for 3 variables y , x\, X2 and consider a problem of regressing y on two (qualitative) variables x\, xz. Data y (Income) x (Gender) X2 (Management Status) obs no. Female None 2 Male None 3 Female Yes 4 Male Yes Y4 To handle the qualitative variables x\, x2, we define dummy variables z1, 22 as Male for for 1, 1, T2= Yes Z1= Z2= -1 for for 1 1 =...
3. (20 pts) Suppose that we have 4 observations for 3 variables y,I, 2 and consider...
3. (20 pts) Suppose that we have 4 observations for 3 variables y,I, 2 and consider a problem of regressing y on two (qualitative) variables r, 2. Data: 22 obs no. y (Income) 2 (Management Status) I (Gender) 1 None Female 2 None Male Yes Female Yes Male 4 To handle the qualitative variables r, 12, we define dummy variables 1, 22 as for 1, 22= Yes Male for 1, 219 22 -1. for 22= None for 1= Female -1,...
Question 2 1 pts Suppose that we wish to built the following multiple regression model: Ý;...
Question 2 1 pts Suppose that we wish to built the following multiple regression model: Ý; = ßo + Ê, Xi1 + ,Xj2 where Y = mathematics exam score, X 1 =number of hours spent studying, X 2 =number of hours spent playing video games. Suppose we know that the number of hours spent studying is directly inversely proportional to the number of hours spend playing video games. Which of the following would be true, We cannot obtain the coefficients...
1. A professor examined the relationship between the number of hours devoted to reading, each week...
1. A professor examined the relationship between the number of hours devoted to reading, each week Y and the independent variable social class X1), the number of years of school completed x2 and reading speed X3, in pages read per hour. The following ANOVA table obtained from a stepwise regression procedure for a sample of 19 women over 60. A) Fill in the missing values. DESS Source Regression x3 MS P value 1 1058.628 Residual 585.02 Regression X2 X3 183.743...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0 -1 -2 -3 30 2 2 2 1 0 -1 0 -1 We aim at fitting the linear model Y; = Bo + Bizil + B22i2 + Ei, i = 1, 2, ..., 7. (1) Find the least square estimate B; (2) Find the R2 statistic; (3) Find ô2 and Cov(); (4) Find a 95% confidence interval for B1; (5) Test Ho: B1 =...
Given the model: the student average score, status, and type of major. There are two status...
Given the model: the student average score, status, and type of major. There are two status types, Freshman and Sophomore, and there are two majors, architecture and business. The two qualitative regressors are Where y represents the year and x1, x2, and x3 represent if Freshman if Sophomore And if Architecture Major if Business Major X3= (a) Interpret the regression coefficients Bo, b1, b2, and b3 b) Interpret the following null hypothesis tests: b2-b3-0 AND b1-0
Consider the regression model y = Bo + B1X1 + B2X2 + ε where Xy and...
Consider the regression model y = Bo + B1X1 + B2X2 + ε where Xy and X2 are as defined below. Xq = A quantitative variable 1 if x2 <20 x2 = { 0 if X, 220 The estimated regression equation ý = 23.9+ 5.4x4 +6.9x, was obtained from a sample of 20 observations. Complete parts a through d below. a. Provide the estimated regression equation for instances in which X4 <20. y=1( ) x (Type integers or decimals.) b....
Question 1 (4 points] 1. [1 point] Suppose the regression model is logarithmic: log(Y) = B1 + B2 log(X) +u. The estimat...
Question 1 (4 points] 1. [1 point] Suppose the regression model is logarithmic: log(Y) = B1 + B2 log(X) +u. The estimate of B2 is 0.035. What is the interpretation of this coefficient? 2. (1 point] Suppose the regression model is semi-logarithmic: log(Y) = Bi + B2X + u. The estimate of B2 is 0.035. What is the interpretation of this coefficient? 3. [1 point] Suppose the regression model has quadratic term: Y = Bi+B2X + B3 X2 +u. The...
Consider the following function: where x1 2 0,0,A 0, 0<1. a) Suppose that the preferences of...
Consider the following function: where x1 2 0,0,A 0, 0<1. a) Suppose that the preferences of a consumer regarding the consumption of goods x1 and x2 are represented by function = f(x1,x2) above. Suppose also that the consumer is endowed with some disposable income Y > 0 and faces prices pı and p2 respectively for goods x1 and x2. i) Derive and describe the demand of the consumer for goods x1 and x2. [20 marks] i) Are demand functions affected...
Type or pas 2. Let the population regression model between a dependent variable y and an...
Type or pas
2. Let the population regression model between a dependent variable y and an independent variable is given by y= Bo+ B1 x x+ u Suppose that E(u|x) = E(u) = 0 and V(ux) = o2. Based on a random sample ((y, ) i = 1,2,...n) of size n such that (xi- )2>0, let Bo and B be the OLS estimates of Bo and Bi respectively. Answer the following questions (c) Let B i Show that if B1...
3. (20 pts) Suppose that we have 4 observations for 3 variables y , x\, X2 and consider a problem of regressing y on two (qualitative) variables x\, xz. Data y (Income) x (Gender) X2 (Management Status) obs no. Female None 2 Male None 3 Female Yes 4 Male Yes Y4 To handle the qualitative variables x\, x2, we define dummy variables z1, 22 as Male for for 1, 1, T2= Yes Z1= Z2= -1 for for 1 1 =...
3. (20 pts) Suppose that we have 4 observations for 3 variables y,I, 2 and consider a problem of regressing y on two (qualitative) variables r, 2. Data: 22 obs no. y (Income) 2 (Management Status) I (Gender) 1 None Female 2 None Male Yes Female Yes Male 4 To handle the qualitative variables r, 12, we define dummy variables 1, 22 as for 1, 22= Yes Male for 1, 219 22 -1. for 22= None for 1= Female -1,...
Question 2 1 pts Suppose that we wish to built the following multiple regression model: Ý; = ßo + Ê, Xi1 + ,Xj2 where Y = mathematics exam score, X 1 =number of hours spent studying, X 2 =number of hours spent playing video games. Suppose we know that the number of hours spent studying is directly inversely proportional to the number of hours spend playing video games. Which of the following would be true, We cannot obtain the coefficients...
1. A professor examined the relationship between the number of hours devoted to reading, each week Y and the independent variable social class X1), the number of years of school completed x2 and reading speed X3, in pages read per hour. The following ANOVA table obtained from a stepwise regression procedure for a sample of 19 women over 60. A) Fill in the missing values. DESS Source Regression x3 MS P value 1 1058.628 Residual 585.02 Regression X2 X3 183.743...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0 -1 -2 -3 30 2 2 2 1 0 -1 0 -1 We aim at fitting the linear model Y; = Bo + Bizil + B22i2 + Ei, i = 1, 2, ..., 7. (1) Find the least square estimate B; (2) Find the R2 statistic; (3) Find ô2 and Cov(); (4) Find a 95% confidence interval for B1; (5) Test Ho: B1 =...
Given the model: the student average score, status, and type of major. There are two status types, Freshman and Sophomore, and there are two majors, architecture and business. The two qualitative regressors are Where y represents the year and x1, x2, and x3 represent if Freshman if Sophomore And if Architecture Major if Business Major X3= (a) Interpret the regression coefficients Bo, b1, b2, and b3 b) Interpret the following null hypothesis tests: b2-b3-0 AND b1-0
Consider the regression model y = Bo + B1X1 + B2X2 + ε where Xy and X2 are as defined below. Xq = A quantitative variable 1 if x2 <20 x2 = { 0 if X, 220 The estimated regression equation ý = 23.9+ 5.4x4 +6.9x, was obtained from a sample of 20 observations. Complete parts a through d below. a. Provide the estimated regression equation for instances in which X4 <20. y=1( ) x (Type integers or decimals.) b....
Question 1 (4 points] 1. [1 point] Suppose the regression model is logarithmic: log(Y) = B1 + B2 log(X) +u. The estimate of B2 is 0.035. What is the interpretation of this coefficient? 2. (1 point] Suppose the regression model is semi-logarithmic: log(Y) = Bi + B2X + u. The estimate of B2 is 0.035. What is the interpretation of this coefficient? 3. [1 point] Suppose the regression model has quadratic term: Y = Bi+B2X + B3 X2 +u. The...
Consider the following function: where x1 2 0,0,A 0, 0<1. a) Suppose that the preferences of a consumer regarding the consumption of goods x1 and x2 are represented by function = f(x1,x2) above. Suppose also that the consumer is endowed with some disposable income Y > 0 and faces prices pı and p2 respectively for goods x1 and x2. i) Derive and describe the demand of the consumer for goods x1 and x2. [20 marks] i) Are demand functions affected...
Type or pas
2. Let the population regression model between a dependent variable y and an independent variable is given by y= Bo+ B1 x x+ u Suppose that E(u|x) = E(u) = 0 and V(ux) = o2. Based on a random sample ((y, ) i = 1,2,...n) of size n such that (xi- )2>0, let Bo and B be the OLS estimates of Bo and Bi respectively. Answer the following questions (c) Let B i Show that if B1...
Most questions answered within 3 hours.
-
Given the following stresses (in MP a); in each case:
(a) Find the principal stresses σ1;...
asked 1 minute ago -
You are one of the first engineers hired into the
manufacturing engineering department at a brand...
asked 6 minutes ago -
Suppose car models A, B, and C are popular among drivers.
Suppose 12% of the drivers...
asked 24 minutes ago -
write a program that finds the number of zeros in an 8-bit data
item using assembly...
asked 24 minutes ago -
Which statement is always true: The total energy of a closed
system...
A) is always equally...
asked 38 minutes ago -
find the critical value associated with a right sided hypothesis of
the mean using a sample...
asked 2 hours ago -
Which of the following statements is true with respect to a
simple linear regression model?
a....
asked 3 hours ago -
The energy required to remove an electron from a surface of a
solid element is called...
asked 4 hours ago -
How would you train your employees to avoid risks of using
mobile devices?
asked 5 hours ago -
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 6 hours ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 6 hours ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 7 hours ago