Homework Answers
Add Answer to:
Question 2: Hypothesis testing (30 pts) Consider the following simple linear regression model with E[G-0 and...
R is a little difficult for me, please answer if you can interpret the R code, I want to learn better how to interpret the R code 4. each 2 pts] Below is the R output for a simple linear regression m...
R is a little difficult for me, please answer if you can
interpret the R code, I want to learn better how to interpret the R
code
4. each 2 pts] Below is the R output for a simple linear regression model Coefficients: Estimate Std. Error t value Pr(>t) (Intercept) 77.863 4.199 18.544 3.54e-13 3.485 3.386 0.00329* 11.801 Signif. codes: 0 0.0010.010.05 0.11 Residual standard error: 3.597 on 18 degrees of freedom Multiple R-squared: 0.3891, Adjusted R-squared: 0.3552 F-statistic: 11.47...
(13 points) Suppose you have a simple linear regression model such that Y; = Bo +...
(13 points) Suppose you have a simple linear regression model such that Y; = Bo + B18: +€4 with and N(0,0%) Call: 1m (formula - y - x) Formula: F=MSR/MSE, R2 = SSR/SSTO ANOVA decomposition: SSTOSSE + SSR Residuals: Min 1Q Modian -2.16313 -0.64507 -0.06586 Max 30 0.62479 3.00517 Coefficients: Estimate Std. Error t value Pr(> It) (Intercept) 8.00967 0.36529 21.93 -0.62009 0.04245 -14.61 <2e-16 ... <2e-16 .. Signif. codes: ****' 0.001 '** 0.01 '* 0.05 0.1'' 1 Residual standard...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 +...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 + Blog(x14) + Ej. We have the following statistics for the regression Call: 1m formula = y “ x1 + x2 + x3 + log(x4) Coefficients: Estimate Std. Error t value Pr(>1t|) (Intercept) 154.1928 194.9062 0.791 0.432938 x1 -4.2280 2.0301 -2.083 0.042873 * x2 -6.1353 2.1936 -2.797 0.007508 ** x3 0.4719 0.1285 3.672 0.000626 *** x4 26.7552 9.3374 2.865 0.006259 ** Signif. codes: O '***'...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 +...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 + Blog(x14) + Ej. We have the following statistics for the regression Call: 1m formula = y “ x1 + x2 + x3 + log(x4) Coefficients: Estimate Std. Error t value Pr(>1t|) (Intercept) 154.1928 194.9062 0.791 0.432938 x1 -4.2280 2.0301 -2.083 0.042873 * x2 -6.1353 2.1936 -2.797 0.007508 ** x3 0.4719 0.1285 3.672 0.000626 *** x4 26.7552 9.3374 2.865 0.006259 ** Signif. codes: O '***'...
Q. 9 The following is a partial regression result of a two-variable model (i.e. simple linear...
Q. 9 The following is a partial regression result of a two-variable model (i.e. simple linear regression). In the study, a health care economist seeks to determine if a relationship exists between personal income and expenditures on health care, both measured in billions of dollars. Regression Statistics Multiple R ??? R Square ??? Standard Error Observations 51 ANOVA df SS MS F P-value Regression 1 15,750.32 0.00001 Residual/Error Total ??? 16,068.21 Coefficients Standard Error t Stat P-value Lower 95% Upper...
Consider the simple linear regression model: HARD1 = β0 + β1*SCORE + є, where є ~...
Consider the simple linear regression model: HARD1 = β0 + β1*SCORE + є, where є ~ N(0, σ). Note: HARD1 is the Rockwell hardness of 1% copper alloys and SCORE is the abrasion loss score. Assume all regression model assumptions hold. The following incomplete output was obtained from Excel. Consider also that the mean of x is 81.467 and SXX is 81.733. SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square 0.450969 Standard Error Observations 15 ANOVA df...
Using R output provided 1). Perform hypothesis testing for B(beta)1=2 using A(alpha)=0.05 > summary(ls) Call: Residuals:...
Using R output provided
1). Perform hypothesis testing for B(beta)1=2 using
A(alpha)=0.05
> summary(ls) Call: Residuals: Min 1Q Median 3Q Max 0.20283 -0.14691 -0.02255 0.06655 0.44541 Coefficients: (Intercept) 0.365100.099043.686 0.003586 ** Signif. codes: 0 '***' 0.001 '0.01 '*'0.05 '.' 0.1''1 Estimate Std. Error t value Pr>Itl) 0.96683 0.18292 5.286 0.000258** Residual standard error: 0.1932 on 11 degrees of freedom Multiple R-squared 0.7175, Adjusted R-squared: 0.6918 F-statistic: 27.94 on 1 and 11 DF, p-value: 0.0002581 anovaCLs) Analysis of Variance Table Response:...
2 pts Question 4 In the classical regression model we maximize the sum of the squared...
2 pts Question 4 In the classical regression model we maximize the sum of the squared errors. O True False 2 pts D Question 5 The terms coefficients of determination and R-square are synonyms, measuring how well a regression model fits the data. O True False 2 pts Question 6 Student's t-statistic is calculated as the ratio of an estimated coefficient divided by its standard error. True False
Problem 6 Part A.5 Consider the following regression output for the Single Index Model where excess returns on Microsof...
Problem 6 Part A.5 Consider the following regression output for the Single Index Model where excess returns on Microsoft Corp (MSFT) index regressed on the excess returns for the S&P500 are RMSFT ()aMFTPrsSPTRS&PS00 ()+eFT (t) S&P500 Regression Statistics Multiple R 0.5764 R Square 0.3322 Adjusted R Square 0.3302 Standard Error 3.1156 Observations 338 Coefficients Standard Error t Stat P-value 0.7064 -0.0639 0.1695 -0.3770 Intercept 0.0000 R_S&P500 0.8139 0.0629 12.9294 Interpret the regression output
Problem 6 Part A.5 Consider the following...
Question 1 1 pts Consider the following model for estimating the salary of employees at a company (in $) by the number of years employed at the company. technitron.1m-(salary- yrs.empl, data technitr...
Question 1 1 pts Consider the following model for estimating the salary of employees at a company (in $) by the number of years employed at the company. technitron.1m-(salary- yrs.empl, data technitron.af) sumary(technitron.1n ss Call: # In(formula . salary ~ yrs.enp1. dat. . technitron.df) # Residuals: Medianax Min -12854.7-4188.9 281.5 3254.4 16493. a# as Coefficients Estimate Std. Error t value Pr( ltl) < 2e-16 5.93e-10 (Intercept) 28394.2 1107 .2 1794.อ 140.4 15.828 7.884 a: yrs . enp1 ㆅ signif. codes...
R is a little difficult for me, please answer if you can
interpret the R code, I want to learn better how to interpret the R
code
4. each 2 pts] Below is the R output for a simple linear regression model Coefficients: Estimate Std. Error t value Pr(>t) (Intercept) 77.863 4.199 18.544 3.54e-13 3.485 3.386 0.00329* 11.801 Signif. codes: 0 0.0010.010.05 0.11 Residual standard error: 3.597 on 18 degrees of freedom Multiple R-squared: 0.3891, Adjusted R-squared: 0.3552 F-statistic: 11.47...
(13 points) Suppose you have a simple linear regression model such that Y; = Bo + B18: +€4 with and N(0,0%) Call: 1m (formula - y - x) Formula: F=MSR/MSE, R2 = SSR/SSTO ANOVA decomposition: SSTOSSE + SSR Residuals: Min 1Q Modian -2.16313 -0.64507 -0.06586 Max 30 0.62479 3.00517 Coefficients: Estimate Std. Error t value Pr(> It) (Intercept) 8.00967 0.36529 21.93 -0.62009 0.04245 -14.61 <2e-16 ... <2e-16 .. Signif. codes: ****' 0.001 '** 0.01 '* 0.05 0.1'' 1 Residual standard...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 + Blog(x14) + Ej. We have the following statistics for the regression Call: 1m formula = y “ x1 + x2 + x3 + log(x4) Coefficients: Estimate Std. Error t value Pr(>1t|) (Intercept) 154.1928 194.9062 0.791 0.432938 x1 -4.2280 2.0301 -2.083 0.042873 * x2 -6.1353 2.1936 -2.797 0.007508 ** x3 0.4719 0.1285 3.672 0.000626 *** x4 26.7552 9.3374 2.865 0.006259 ** Signif. codes: O '***'...
Consider a multiple linear regression model Y; = Bo + B1Xi1 + B22:2 + 33213 + Blog(x14) + Ej. We have the following statistics for the regression Call: 1m formula = y “ x1 + x2 + x3 + log(x4) Coefficients: Estimate Std. Error t value Pr(>1t|) (Intercept) 154.1928 194.9062 0.791 0.432938 x1 -4.2280 2.0301 -2.083 0.042873 * x2 -6.1353 2.1936 -2.797 0.007508 ** x3 0.4719 0.1285 3.672 0.000626 *** x4 26.7552 9.3374 2.865 0.006259 ** Signif. codes: O '***'...
Using R output provided
1). Perform hypothesis testing for B(beta)1=2 using
A(alpha)=0.05
> summary(ls) Call: Residuals: Min 1Q Median 3Q Max 0.20283 -0.14691 -0.02255 0.06655 0.44541 Coefficients: (Intercept) 0.365100.099043.686 0.003586 ** Signif. codes: 0 '***' 0.001 '0.01 '*'0.05 '.' 0.1''1 Estimate Std. Error t value Pr>Itl) 0.96683 0.18292 5.286 0.000258** Residual standard error: 0.1932 on 11 degrees of freedom Multiple R-squared 0.7175, Adjusted R-squared: 0.6918 F-statistic: 27.94 on 1 and 11 DF, p-value: 0.0002581 anovaCLs) Analysis of Variance Table Response:...
2 pts Question 4 In the classical regression model we maximize the sum of the squared errors. O True False 2 pts D Question 5 The terms coefficients of determination and R-square are synonyms, measuring how well a regression model fits the data. O True False 2 pts Question 6 Student's t-statistic is calculated as the ratio of an estimated coefficient divided by its standard error. True False
Problem 6 Part A.5 Consider the following regression output for the Single Index Model where excess returns on Microsoft Corp (MSFT) index regressed on the excess returns for the S&P500 are RMSFT ()aMFTPrsSPTRS&PS00 ()+eFT (t) S&P500 Regression Statistics Multiple R 0.5764 R Square 0.3322 Adjusted R Square 0.3302 Standard Error 3.1156 Observations 338 Coefficients Standard Error t Stat P-value 0.7064 -0.0639 0.1695 -0.3770 Intercept 0.0000 R_S&P500 0.8139 0.0629 12.9294 Interpret the regression output
Problem 6 Part A.5 Consider the following...
Question 1 1 pts Consider the following model for estimating the salary of employees at a company (in $) by the number of years employed at the company. technitron.1m-(salary- yrs.empl, data technitron.af) sumary(technitron.1n ss Call: # In(formula . salary ~ yrs.enp1. dat. . technitron.df) # Residuals: Medianax Min -12854.7-4188.9 281.5 3254.4 16493. a# as Coefficients Estimate Std. Error t value Pr( ltl) < 2e-16 5.93e-10 (Intercept) 28394.2 1107 .2 1794.อ 140.4 15.828 7.884 a: yrs . enp1 ㆅ signif. codes...
Most questions answered within 3 hours.
-
What are some strategies for eliminating service barriers?
By using your knowledge of
behavioral styles, please...
asked 4 minutes ago -
What are the decimal numbers for 159, 150, 200, 113, 225, 87,
106, 81 when converted...
asked 12 minutes ago -
Calculate and plot the number and weight distributions of x-mers
found in a step-growth polymerization for...
asked 32 minutes ago -
The Baily Corporation has developed a specialized software
program that improves inventory control capability. The following...
asked 36 minutes ago -
Problem 5-4A (Part Level Submission) Wolford Department Store is
located in midtown Metropolis. During the past...
asked 36 minutes ago -
Preparation of Benzoic Acid using a Grignard Reagent URGENT
1. During your Grignard formation, a small...
asked 59 minutes ago -
A uniform magnetic field is perpendicular to the plane of a wire
loop. If the loop...
asked 58 minutes ago -
At the peak of your career, your were earning $120,000 and
holding a top level position....
asked 1 hour ago -
. A permanent magnet is dropped south-end-down through a horizontal
circular coil with a radius of...
asked 1 hour ago -
Bernie's Beverages purchased some fixed assets classified as
5-year property for MACRS. The assets cost $28,000....
asked 1 hour ago -
How many ATPs are produced from the catabolism of a 10-C
molecule of fatty acid under...
asked 1 hour ago -
Before practicing a routine on the rings, a 64.8 kg gymnast
hangs motionless, with one hand...
asked 1 hour ago