An average light bulb manufactured in a factory lasts 300 days with a standard deviation of50 days. Assume that bulb life is normally distributed. a. What is the probability that an Acme light bulb will last at most 365 days? b. What bulb life separates the bottom 15%? This is an inverse norm problem.
An average light bulb manufactured in a factory lasts 300 days with a standard deviation of50 days. Assume that bulb life is normally distributed. a. What is the probability that an Acme light bulb will last at most 365 days? b. What bulb life separates the bottom 15%? This is an inverse norm problem.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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8.) An average light bulb manufactured in a factory lasts 300 days with a standard deviation of50 days. Assume that bulb life is
a. What is the probability that an Acme light bulb will last at most 365 days?
b. What bulb life separates the bottom 15%? This is an inverse norm problem.
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