1. According to a recent report, replacement times for CD players are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years. (a) Find the probability that a randomly selected CD player will have a replacement time of less than 8.0 years. (b) Find the probability that a randomly selected CD player will have a replacement time of more than 9.0 years. (c) Find the probability that a randomly selected CD player will have a replacement time between 5 and 8 years. (d) Find the probability that a randomly selected CD player will have a replacement time of less than 5.1 or greater than 9.1 years.
1. According to a recent report, replacement times for CD players are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years. (a) Find the probability that a randomly selected CD player will have a replacement time of less than 8.0 years. (b) Find the probability that a randomly selected CD player will have a replacement time of more than 9.0 years. (c) Find the probability that a randomly selected CD player will have a replacement time between 5 and 8 years. (d) Find the probability that a randomly selected CD player will have a replacement time of less than 5.1 or greater than 9.1 years.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:1. According to a recent report, replacement times for CD players are normally distributed
with a mean of 7.1 years and a standard deviation of 1.4 years.
(a) Find the probability that a randomly selected CD player will have a replacement time
of less than 8.0 years.
(b) Find the probability that a randomly selected CD player will have a replacement time
of more than 9.0 years.
(c) Find the probability that a randomly selected CD player will have a replacement time
between 5 and 8 years.
(d) Find the probability that a randomly selected CD player will have a replacement time
of less than 5.1 or greater than 9.1 years.
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