The length of time, L hours, that a phone will work before it needs charging is normally distributed with a mean of 100 hours and a standard deviation of 15 hours. Find the probability that a randomly selected phone will work greater than 127 hours before it needs charging.
The length of time, L hours, that a phone will work before it needs charging is normally distributed with a mean of 100 hours and a standard deviation of 15 hours. Find the probability that a randomly selected phone will work greater than 127 hours before it needs charging.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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SOLVE IT MANUALLY AND EXPLAIN YOUR ANSWER FOR BETTER UNDERSTANDING. DO NOT USE EXCEL.
Transcribed Image Text:Solve the following problem and show your complete solutions. Explain your answer for better
understanding.
The length of time, L hours, that a phone will work before it needs charging is
normally distributed with a mean of 100 hours and a standard deviation of 15 hours.
Find the probability that a randomly selected phone will work greater than 127 hours
before it needs charging.
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