What factors determine whether a person chooses car or bus to travel to work? That is an interesting question. Suppose that you analyze this simple transportation problem using the probit model. The variables in the model are defined as follows: autotime commute time via auto, minutes commute time via bus, minutes =(bus time - auto time)/10, 10 minute units = 1 if auto chosen bustime dtime auto The probit model you estimate is P(AUTO- 1)-Φ(β+ βDTIME). | The estimates of the parameters are: –0.0788 + 0.400DTIME. he marginal effect of increasing public (bus) transportation time, given that travel via public ansportation currently takes 15 minutes longer than auto travel is ) 0.348 ) 0.139 ) 0.307 ) 0.123 ) None of the above (A, B, C, D) is close to be correct.

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter6: Optimization Models With Integer Variables
Section6.5: Set-covering And Location-assignment Models
Problem 29P
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What factors determine whether a person chooses car or bus to travel to work? That is an interesting
question. Suppose that you analyze this simple transportation problem using the probit model. The
variables in the model are defined as follows:
autotime
commute time via auto, minutes
commute time via bus, minutes
=(bus time - auto time)/10, 10 minute units
= 1 if auto chosen
bustime
dtime
auto
The probit model you estimate is
P(AUTO = 1) = ¤(ß1 + B2DTIME).
The estimates of the parameters are: -0.0788 + 0.400DTIME.
The marginal effect of increasing public (bus) transportation time, given that travel via public
transportation currently takes 15 minutes longer than auto travel is
A) 0.348
B) 0.139
C) 0.307
D) 0.123
E) None of the above (A, B, C, D) is close to be correct.
Transcribed Image Text:What factors determine whether a person chooses car or bus to travel to work? That is an interesting question. Suppose that you analyze this simple transportation problem using the probit model. The variables in the model are defined as follows: autotime commute time via auto, minutes commute time via bus, minutes =(bus time - auto time)/10, 10 minute units = 1 if auto chosen bustime dtime auto The probit model you estimate is P(AUTO = 1) = ¤(ß1 + B2DTIME). The estimates of the parameters are: -0.0788 + 0.400DTIME. The marginal effect of increasing public (bus) transportation time, given that travel via public transportation currently takes 15 minutes longer than auto travel is A) 0.348 B) 0.139 C) 0.307 D) 0.123 E) None of the above (A, B, C, D) is close to be correct.
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