The article "Vehicle-Arrival Characteristics at Urban Uncontrolled Intersections" (V. Rengaraju and V. Rao, Journal of Transportation Engineering, 1995:317–323) presents data on traffic characteristics at 10 intersections in Madras, India. The following table provides data on road width in m (x1), traffic volume in vehicles per lane per hour (x2), and median speed in km/h (x3). X1 X2 35.0 76 370 37.5 88 475 26.5 76 507 33.0 80 654 22.5 65 917 26.5 75 842 27.5 92 723 28.0 90 923 23.5 86 1039 24.5 80 1120 Fit the model y = Bo + Bjx1 + Bzx2 + ɛ.Findthe P-values for testing that the coefficients a. are equal to 0. Fit the model y = Bo + BqX1 + e. Findthe P-values for testing that the coefficients are b. equal to 0. Fit the model y = Bo + Bzx2 + ɛ. Findthe P-values for testing that the coefficients are equal to 0. Which of the models (a) through (c) do you think is best? Why? C. d.

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The article "Vehicle-Arrival Characteristics at Urban Uncontrolled Intersections" (V.
Rengaraju and V. Rao, Journal of Transportation Engineering, 1995:317–323) presents
data on traffic characteristics at 10 intersections in Madras, India. The following table
provides data on road width in m (x1), traffic volume in vehicles per lane per hour (x2), and
median speed in km/h (x3).
X1
X2
35.0
76
370
37.5
88
475
26.5
76
507
33.0
80
654
22.5
65
917
26.5
75
842
27.5
92
723
28.0
90
923
23.5
86
1039
24.5
80
1120
Fit the model y = Bo + Bjx1 + Bzx2 + ɛ.Findthe P-values for testing that the coefficients
a.
are equal to 0.
Fit the model y = Bo + BqX1 + e. Findthe P-values for testing that the coefficients are
b.
equal to 0.
Fit the model y = Bo + Bzx2 + ɛ. Findthe P-values for testing that the coefficients are
equal to 0.
Which of the models (a) through (c) do you think is best? Why?
C.
d.
Transcribed Image Text:The article "Vehicle-Arrival Characteristics at Urban Uncontrolled Intersections" (V. Rengaraju and V. Rao, Journal of Transportation Engineering, 1995:317–323) presents data on traffic characteristics at 10 intersections in Madras, India. The following table provides data on road width in m (x1), traffic volume in vehicles per lane per hour (x2), and median speed in km/h (x3). X1 X2 35.0 76 370 37.5 88 475 26.5 76 507 33.0 80 654 22.5 65 917 26.5 75 842 27.5 92 723 28.0 90 923 23.5 86 1039 24.5 80 1120 Fit the model y = Bo + Bjx1 + Bzx2 + ɛ.Findthe P-values for testing that the coefficients a. are equal to 0. Fit the model y = Bo + BqX1 + e. Findthe P-values for testing that the coefficients are b. equal to 0. Fit the model y = Bo + Bzx2 + ɛ. Findthe P-values for testing that the coefficients are equal to 0. Which of the models (a) through (c) do you think is best? Why? C. d.
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