Company XYZ know that replacement times for the portable MP3 players it produces are normally distributed with a mean of 3 years and a standard deviation of 1.1 years. Find the probability that a randomly selected portable MP3 player will have a replacement time less than 0.6 years? P(X < 0.6 years) - 0.0146 Enter your answer accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If the company wants to provide a warranty so that only 2.4% of the portable MP3 players will be replaced before the warranty expires, what is the time length of the warranty? warranty = years Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z- scores rounded to 3 decimal places are accepted.
Company XYZ know that replacement times for the portable MP3 players it produces are normally distributed with a mean of 3 years and a standard deviation of 1.1 years. Find the probability that a randomly selected portable MP3 player will have a replacement time less than 0.6 years? P(X < 0.6 years) - 0.0146 Enter your answer accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If the company wants to provide a warranty so that only 2.4% of the portable MP3 players will be replaced before the warranty expires, what is the time length of the warranty? warranty = years Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z- scores rounded to 3 decimal places are accepted.
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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Transcribed Image Text:Company XYZ know that replacement times for the portable MP3 players it produces are normally
distributed with a mean of 3 years and a standard deviation of 1.1 years.
Find the probability that a randomly selected portable MP3 player will have a replacement time less than
0.6 years?
P(X < 0.6 years) =0.0146
Enter your answer accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded
to 3 decimal places are accepted.
If the company wants to provide a warranty so that only 2.4% of the portable MP3 players will be replaced
before the warranty expires, what is the time length of the warranty?
warranty =
years
Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-
scores rounded to 3 decimal places are accepted.
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