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Question
City planners are evaluating three proposed alternatives for relieving the growing traffic congestion on a north-south highway in a booming city. The proposed alternatives are: (1) designate high-occupancy vehicle (HOV) lanes on the existing highway, (2) construct a new, parallel highway, and (3) construct a light (passenger) rail system.In an analysis of the three proposals, a citizen group has raised the question of whether preferences for the three alternatives differ among residents near the highway and non-residents. A test of independence will address this question, with the hypotheses being:
H0: Proposal preference isindependent of the residency status of the individual
Ha: Proposal preference is notindependent of the residency status of the individual
A simple random sample of 500 individuals has been selected. The crosstabulation of the residency statuses and proposal preferences of the individuals sampled is shown below.
| Residency Status | HOV Lane | New Highway | Light Rail |
| Nearby resident | 110 | 45 | 70 |
| Distant resident | 140 | 75 | 60 |
Conduct a test of independence using
= .05 to address the question of whether residency status is independent of the proposal preference. Answer
This answer is hidden. It contains 76 characters.
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