# 50 from Book The time to failure of Eastinghome light bulbs is Weibull-distributed with v = 1.8 x 10° hours, a = /3 x 10° hours, and ß = /2. (a) What fraction of bulbs are expected to last longer than the mean lifetime? (b) What is the median lifetime of a light bulb?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.6: Quadratic Functions
Problem 38E
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# 50 from Book
The time to failure of Eastinghome light bulbs is Weibull-distributed with v = 1.8 x 103 hours,
a = /3 x 10° hours, and B = 1/2.
(a) What fraction of bulbs are expected to last longer than the mean lifetime?
(b) What is the median lifetime of a light bulb?
Transcribed Image Text:# 50 from Book The time to failure of Eastinghome light bulbs is Weibull-distributed with v = 1.8 x 103 hours, a = /3 x 10° hours, and B = 1/2. (a) What fraction of bulbs are expected to last longer than the mean lifetime? (b) What is the median lifetime of a light bulb?
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