The working life of a certain electrical equipment is normally distributed with a mean of 180 days and a standard deviation of 4 days. For each of the following questions, construct a normal distribution curve and provide the answer. About what percent of the products last between 176 and 184 days? About what percent of the products last between 180 and 184 days? For each of the following questions, use the standard normal table and provide the answer. About what percent of the products last 172 or less days? About what percent of the products last 184 or more days?
The working life of a certain electrical equipment is normally distributed with a mean of 180 days and a standard deviation of 4 days. For each of the following questions, construct a normal distribution curve and provide the answer. About what percent of the products last between 176 and 184 days? About what percent of the products last between 180 and 184 days? For each of the following questions, use the standard normal table and provide the answer. About what percent of the products last 172 or less days? About what percent of the products last 184 or more days?
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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The working life of a certain electrical equipment is normally distributed with a mean of 180 days and a standard deviation of 4 days.
For each of the following questions, construct a normal distribution curve and provide the answer.
About what percent of the products last between 176 and 184 days?
About what percent of the products last between 180 and 184 days?
For each of the following questions, use the standard normal table and provide the answer.
About what percent of the products last 172 or less days?
About what percent of the products last 184 or more days?
Transcribed Image Text:The working life of a certain electrical equipment is normally distributed with a mean of
180 days and a standard deviation of 4 days.
For each of the following questions, construct a normal distribution curve and provide the
answer.
About what percent of the products last between 176 and 184 days?
About what percent of the products last between 180 and 184 days?
For each of the following questions, use the standard normal table and provide the answer.
About what percent of the products last 172 or less days?
About what percent of the products last 184 or more days?
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