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(Round to four decimal places as needed.) b. What percentage of trucks can be expected to travel either less than 70 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 70 or more than 95 thousand miles in a year is %. (Round to two decimal places as needed.)

(Round to four decimal places as needed.) b. What percentage of trucks can be expected to travel either less than 70 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 70 or more than 95 thousand miles in a year is %. (Round to two decimal places as needed.)

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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Question
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Answer B
A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 80 thousand miles and a standard deviation of 12 thousand miles. Complete parts (a) through (d) below. a. What proportion of trucks can be expected to travel between 63 and 80 thousand miles in a year? The proportion of trucks that can be expected to travel between 63 and 80 thousand miles in a year is 0.4217. (Round to four decimal places as needed.) b. What percentage of trucks can be expected to travel either less than 70 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 70 or more than 95 thousand miles in a year is %. (Round to two decimal places as needed.)
Transcribed Image Text:A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 80 thousand miles and a standard deviation of 12 thousand miles. Complete parts (a) through (d) below. a. What proportion of trucks can be expected to travel between 63 and 80 thousand miles in a year? The proportion of trucks that can be expected to travel between 63 and 80 thousand miles in a year is 0.4217. (Round to four decimal places as needed.) b. What percentage of trucks can be expected to travel either less than 70 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 70 or more than 95 thousand miles in a year is %. (Round to two decimal places as needed.)
Expert Solution
Step 1: We have given that

X~N(μ=80,σ=12)

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