In a driver-side "star" scoring system for crash-testing new cars, each crash-tested car is given a rating ranging from one star to five stars; the more stars in the rating, the better is the level of crash protection in a head-on collision. A summary of the driver-side star ratings for 98 cars is reproduced in the accompanying table. Assume that 1 of the 98 cars is selected at random, and let x equal the number of stars in the car's driver-side star rating. Complete parts a through d.
Rating Count Percent
2 5 5.10
3 16 16.33
4 54 55.10
5 23 23.47
N=98
X |
1 |
2 |
3 |
4. |
|
p(x) |
---|
(Round to four decimal places as needed.)
In a driver-side "star" scoring system for crash-testing new cars, each crash-tested car is given a...
In a driver-side "star" scoring system for crash-testing new cars, each crash-tested car is given a rating ranging from one star to five stars; the more stars in the rating, the better is the level of crash protection in a head-on collision. A summary of thedriver-side star ratings for 98 cars is reproduced in the accompanying table. Assume that 1 of the 98 cars is selected at random, and let x equal the number of stars in thecar's driver-side star...
NHTSA crash tests. Refer to the National Highway Traffic Safety Administration (NHTSA) crash tests of new car models, presented in Exercise. A summary of the driver–side star ratings for the 98 cars in the CRASH file is reproduced in the accompanying MINITAB printout. Assume that 1 of the 98 cars is selected at random, and let x equal the number of stars in the car’s driver–side star rating.a. Use the information in the printout to find the probability distribution for...
Refer to the National Highway Traffic Safety Administration (NHTSA) crash tests of new car models, presented in Exercise 4.6 (p. 188). A summary of the driver-side star ratings for the 98 cars is reproduced in the MINITAB printout in the next column. Assume that 1 of the 98 cars is selected at random, and let x equal the number of stars in the car’s driver-side star rating.Rating Count Percent 2 5 5.10 3 16 16.33 4 54 55.10 5 23...