Homework Answers
a)applying regression:
yhat=908.14+10.32*x
b)
s=29.8171
R2 =0.9415
R-sqr-adj =0.9268
| df | SS | MS | F | p value | |
| Regression | 1 | 57204 | 57204 | 64.34 | 0.0013 |
| Residual | 4 | 3556 | 889 | ||
| Total | 5 | 60760 |
p value is less than............ is significant
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A highway department is studying the relationship between traffic flow and speed. The following model has...
A highway department is studying the relationship between traffic flow and speed. The following m...
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 Traffic Flow (y) 1,256 1,330 1,226 1,335 1,350 1,125 Vehicle Speed (x) 35 35 50 25 Enter negative values as negative, if necessary a. Show the estimated regression equation (to 3...
A highway department is studying the relationship between traffic flow and speed. The following model has...
A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized: y = β0 + β1x + ε 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. Traffic Flow (y) Vehicle Speed (x) 1,257 35 1,327 40 1,226 30 1,333 45 1,350 50 1,122 25 In working further with...
c. Estimate the traffic flow in vehicles per hour at a speed of 39 miles per...
c. Estimate the traffic flow in vehicles per
hour at a speed of 39 miles per hour (to 2 decimals).
The estimated value is = ____ (to 2 decimals)
99% Confidence interval = ( , ) (to 2 decimals)
99% Prediction interval = ( , ) (to 2 decimals)
A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. ŷ = bo + b12+b222 where y=traffic flow in vehicles per hour I...
A statistical program is recommended. A highway department is studying the relationship between traffic flow and...
A statistical program is recommended. A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized: у %3DВо + В,х +е 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 Traffic Flow Vehicle Speed (x) (y) 1,257 35 40 1,327 1,226 30 1,333 45 50 1,350 1,122 25 In working...
CENGAGE | MINDTAP Q Search this course Julia Chapter 16 Assignment A highway department is studying...
CENGAGE | MINDTAP Q Search this course Julia Chapter 16 Assignment A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. y = Bo+ B 1x + B 2x2 + € 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. Traffic Flow (y) Vehicle Speed (x) 1,257 1,329...
QUESTION THREE On an urban highway, the relationship between vehicle speed and density can be represented...
QUESTION THREE On an urban highway, the relationship between vehicle speed and density can be represented by the Greenburg Model as the data in Table 3.1. Due to the roadwork on this highway, the width of both traffic lanes is narrowed and a bottleneck to traffic flow forms. The maximum flow on the unobstructed highway is 5000 vehicles per hour whilst on the section under repair the maximum flow is 4000 vehicles per hour. When the traffic flow approaching the...
The following table shows data on the relationship between the average state speed limit and the...
The following table shows data on the relationship between the average state speed limit and the number of trafic fatalities that occur each year on a per-capta basis. Speed Limit (Milles per hour) (Per million drivers per year) 20 20 30 60 Use the orange points (square symbol) to plot the data from the table on the graph below. Line segments will automatically connect the point Fatalities Utah G0 40 20 10 0 15 20 25 0 40 5 50...
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 Traffic Flow (y) 1,256 1,330 1,226 1,335 1,350 1,125 Vehicle Speed (x) 35 35 50 25 Enter negative values as negative, if necessary a. Show the estimated regression equation (to 3...
c. Estimate the traffic flow in vehicles per
hour at a speed of 39 miles per hour (to 2 decimals).
The estimated value is = ____ (to 2 decimals)
99% Confidence interval = ( , ) (to 2 decimals)
99% Prediction interval = ( , ) (to 2 decimals)
A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. ŷ = bo + b12+b222 where y=traffic flow in vehicles per hour I...
A statistical program is recommended. A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized: у %3DВо + В,х +е 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 Traffic Flow Vehicle Speed (x) (y) 1,257 35 40 1,327 1,226 30 1,333 45 50 1,350 1,122 25 In working...
CENGAGE | MINDTAP Q Search this course Julia Chapter 16 Assignment A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. y = Bo+ B 1x + B 2x2 + € 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. Traffic Flow (y) Vehicle Speed (x) 1,257 1,329...
QUESTION THREE On an urban highway, the relationship between vehicle speed and density can be represented by the Greenburg Model as the data in Table 3.1. Due to the roadwork on this highway, the width of both traffic lanes is narrowed and a bottleneck to traffic flow forms. The maximum flow on the unobstructed highway is 5000 vehicles per hour whilst on the section under repair the maximum flow is 4000 vehicles per hour. When the traffic flow approaching the...
The following table shows data on the relationship between the average state speed limit and the number of trafic fatalities that occur each year on a per-capta basis. Speed Limit (Milles per hour) (Per million drivers per year) 20 20 30 60 Use the orange points (square symbol) to plot the data from the table on the graph below. Line segments will automatically connect the point Fatalities Utah G0 40 20 10 0 15 20 25 0 40 5 50...
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