Concept explainers
In working further with the problem of exercise 4, statisticians suggested the use of the following curvilinear estimated regression equation.
- a. Use the data of exercise 4 to compute the coefficients of this estimated regression equation.
- b. Using α = .01, test for a significant relationship.
- c. Estimate the traffic flow in vehicles per hour at a speed of 38 miles per hour.
4. A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized.
where
y = traffic flow in vehicles per hour
x = vehicle speed in miles per hour
The following data were collected during rush hour for six highways leading out of the city.
- a. Develop an estimated regression equation for the data.
- b. Using α = .01, test for a significant relationship.
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Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
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