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Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X~ N( 76 ✓ 6 b. If one car is randomly chosen, find the probability that it is traveling more than 78 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 81 mph. Round to 4 decimal places.

Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X~ N( 76 ✓ 6 b. If one car is randomly chosen, find the probability that it is traveling more than 78 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 81 mph. Round to 4 decimal places.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X N 76 ✓ 6 b. If one car is randomly chosen, find the probability that it is traveling more than 78 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 81 mph. Round to 4 decimal places. Question Help: Written Example Message instructor Submit Question a
Transcribed Image Text:Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X N 76 ✓ 6 b. If one car is randomly chosen, find the probability that it is traveling more than 78 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 81 mph. Round to 4 decimal places. Question Help: Written Example Message instructor Submit Question a
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