The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours. What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed? hours? What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?
The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours. What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed? hours? What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?
A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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![The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
deviation of 600 hours.
What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed?
hours?
What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4f3dcdba-1f7a-44a7-8c80-a17cbffdad29%2F4bc6df91-c8c9-4170-8fe1-149a90d0145b%2Fvgtfnz_processed.png&w=3840&q=75)
Transcribed Image Text:The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
deviation of 600 hours.
What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed?
hours?
What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?
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Please answer P(Z < - 1.12) and What life in hours does 75% of the lasers exceed. thank you!
![The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
deviation of 600 hours.
What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed?
hours?
What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?](https://content.bartleby.com/qna-images/question/4f3dcdba-1f7a-44a7-8c80-a17cbffdad29/18f5c385-bcf5-4ff2-a2fd-66e8e2c1c9e4/5qlss3_thumbnail.png)
Transcribed Image Text:The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
deviation of 600 hours.
What is the probability that a laser fails before 5000 What is the life in hours that 95% of the lasers exceed?
hours?
What is the probability that a laser fails after 8500 hours? What life in hours does 75% of the lasers exceed?
![Sketch the area being described and evaluate the probabilities for the Standard Normal Distribution
P(Z < 2.15)
P(Z < -1.12)
P(Z > 1.15)
P(0.15 <Z < 1.98)
P(Z > -0.34)
P(-0.25 <Z < -0.10)](https://content.bartleby.com/qna-images/question/4f3dcdba-1f7a-44a7-8c80-a17cbffdad29/18f5c385-bcf5-4ff2-a2fd-66e8e2c1c9e4/fqg6dz8_thumbnail.png)
Transcribed Image Text:Sketch the area being described and evaluate the probabilities for the Standard Normal Distribution
P(Z < 2.15)
P(Z < -1.12)
P(Z > 1.15)
P(0.15 <Z < 1.98)
P(Z > -0.34)
P(-0.25 <Z < -0.10)
Solution
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