The following table shows the rate R of vehicular involvement in traffic accidents (per 100,000,000 vehicle-miles) as a function of vehicular speed s, in miles per hour, for commercial vehicles driving at night on urban streets. Speed s Accident rate R 20 1600 25 700 30 350 35 250 40 650 45 1350 (a) Use regression to find a quadratic model for the data. (Round the regression parameters to two decimal places.) (b) Calculate R(65)= (Round your answer to two decimal places.) Explain what your answer means in practical terms. Commercial vehicles driving at night on urban streets at *blank* miles per hour have traffic accidents at a rate of *blank* per 100,000,000 vehicle miles. (c) At what speed is vehicular involvement in traffic accidents (for commercial vehicles driving at night on urban streets) at a minimum? (Round your answer to the nearest whole number.)
The following table shows the rate R of vehicular involvement in traffic accidents (per 100,000,000 vehicle-miles) as a function of vehicular speed s, in miles per hour, for commercial vehicles driving at night on urban streets. Speed s Accident rate R 20 1600 25 700 30 350 35 250 40 650 45 1350 (a) Use regression to find a quadratic model for the data. (Round the regression parameters to two decimal places.) (b) Calculate R(65)= (Round your answer to two decimal places.) Explain what your answer means in practical terms. Commercial vehicles driving at night on urban streets at *blank* miles per hour have traffic accidents at a rate of *blank* per 100,000,000 vehicle miles. (c) At what speed is vehicular involvement in traffic accidents (for commercial vehicles driving at night on urban streets) at a minimum? (Round your answer to the nearest whole number.)
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section: Chapter Questions
Problem 10T: Olympic Pole Vault The graph in Figure 7 indicates that in recent years the winning Olympic men’s...
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The following table shows the rate R of vehicular involvement in traffic accidents (per 100,000,000 vehicle-miles) as a
| Speed s | Accident rate R |
|---|---|
| 20 | 1600 |
| 25 | 700 |
| 30 | 350 |
| 35 | 250 |
| 40 | 650 |
| 45 | 1350 |
(a) Use regression to find a quadratic model for the data. (Round the regression parameters to two decimal places.)
(b) Calculate
R(65)= (Round your answer to two decimal places.)
Explain what your answer means in practical terms.
Commercial vehicles driving at night on urban streets at *blank* miles per hour have traffic accidents at a rate of *blank* per 100,000,000 vehicle miles.
(c) At what speed is vehicular involvement in traffic accidents (for commercial vehicles driving at night on urban streets) at a minimum? (Round your answer to the nearest whole number.)
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