The speeds of vehicles on a highway with speed limit 110 km/h are normally distributed with mean 124 km/h and standard deviation 7 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? 2.28 % THER (b) If police are instructed to ticket motorists driving 130 km/h or more, what percentage of motorist are targeted? 19.49 X %

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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The speeds of vehicles on a highway with speed limit 110 km/h are normally distributed with mean 124 km/h and standard deviation 7 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?
2.28
%
(b) If police are instructed to ticket motorists driving 130 km/h or more, what percentage of motorist are targeted?
19.49
X %
Transcribed Image Text:The speeds of vehicles on a highway with speed limit 110 km/h are normally distributed with mean 124 km/h and standard deviation 7 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? 2.28 % (b) If police are instructed to ticket motorists driving 130 km/h or more, what percentage of motorist are targeted? 19.49 X %
Expert Solution
Step 1

We can solve it by following method

Note: v ≈ x

In step 1: using( -z table) 

In step 2 : using( + z table) 

steps

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Solved in 3 steps with 1 images

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