Bardi Trucking Co., located in Cleveland, Ohio, makes deliveries in the Great La
ID: 3311769 • Letter: B
Question
Bardi Trucking Co., located in Cleveland, Ohio, makes deliveries in the Great Lakes region, the Southeast, and the Northeast. Jim Bardi, the president, is studying the relationship between the distance a shipment must travel and the length of time, in days, it takes the shipment to arrive at its destination. To investigate, Mr. Bardi selected a random sample of 20 shipments made last month. Shipping distance is the independent variable and shipping time is the dependent variable. The results are as follows:
4.
value:
10.00 points
Required information
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
5.
value:
10.00 points
Required information
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
6.
value:
10.00 points
Required information
Compute the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 3 decimal places.)
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
7.
value:
10.00 points
Required information
Can we conclude that there is a positive correlation between distance and time? Use the 0.02 significance level.
(Click to select)RejectDo not reject H0. We (Click to select)cancannot conclude that there is a positive correlation between
distance and time.
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
8.
value:
10.00 points
Required information
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
9.
value:
10.00 points
Required information
Fill in the blank below. (Round your answer to 1 decimal places.)
% of the variation in shipping time is explained by shipping distance.
References
eBook & Resources
WorksheetLearning Objective: 13-02 Calculate a correlation coefficient to test and interpret the relationship between two variables.Learning Objective: 13-05 Evaluate a regression equation’s ability to predict using the standard estimate of the error and the coefficient of determination.
Difficulty: 2 IntermediateLearning Objective: 13-03 Apply regression analysis to estimate the linear relationship between two variables.
Check my work
10.
value:
10.00 points
Required information
Determine the standard error of estimate. (Round your answer to 3 decimal places.)
Bardi Trucking Co., located in Cleveland, Ohio, makes deliveries in the Great Lakes region, the Southeast, and the Northeast. Jim Bardi, the president, is studying the relationship between the distance a shipment must travel and the length of time, in days, it takes the shipment to arrive at its destination. To investigate, Mr. Bardi selected a random sample of 20 shipments made last month. Shipping distance is the independent variable and shipping time is the dependent variable. The results are as follows:
Explanation / Answer
Distance = x , Shipping time = y
3.750087718
correlation coefficient between x and y
H0: 0 vs H1: > 0
Pearson correlation of x and y = 0.202
P-Value = 0.394
alpha= 0.02
pvalue > alpha = 0.02
Accept H0
Linear Regression output
Regression equation is,
y = 2.64 + 0.0101 x
4.07% of the variation in shipping time is explained by shipping distance.
x y Mean 706.1 Mean 9.8 Standard Deviation 74.59992 Standard Deviation3.750087718
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