The speeds of vehicles on a highway with speed limit 90 km/h are normally distributed with mean 101 km/h and standard deviation 6 km/h. (Round your answers to two decimal places.) (a) What is the probability that a randomly chosen vehicle is traveling at a legal speed? % (b) If police are instructed to ticket motorists driving 115 km/h or more, what percentage of motorist are targeted? %
The speeds of vehicles on a highway with speed limit 90 km/h are normally distributed with mean 101 km/h and standard deviation 6 km/h. (Round your answers to two decimal places.) (a) What is the probability that a randomly chosen vehicle is traveling at a legal speed? % (b) If police are instructed to ticket motorists driving 115 km/h or more, what percentage of motorist are targeted? %
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Transcribed Image Text:The speeds of vehicles on a highway with
speed limit 90 km/h are normally
distributed with mean 101 km/h and
standard deviation 6 km/h. (Round your
answers to two decimal places.) (a) What
is the probability that a randomly chosen
vehicle is traveling at a legal speed? % (b)
If police are instructed to ticket motorists
driving 115 km/h or more, what
percentage of motorist are targeted? %
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