Short Answer
A tire manufacturer designed a new tread pattern for its all-weather tires. Repeated tests were conducted on cars of approximately the same weight traveling at 60 miles per hour. The tests showed that the new tread pattern enables the cars to stop completely in an average distance of 125 feet with a standard deviation of 6.5 feet and that the stopping distances are approximately normally distributed.
-One car tested had a stopping distance of 140 feet. Calculate the z-score for this observation.
Correct Answer:
Verified
Correct Answer:
Verified
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