The life span of the lightbulbs manufactured by a certain company is measured by a random variable
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The life span of the lightbulbs manufactured by a certain company is measured by a random variable X with probability density function
where x denotes the life span (in hours) of a randomly selected bulb.
a. What is the probability that the life span of a randomly selected bulb is between 50 and 60 hours?
b. What is the probability that the life span of a randomly selected bulb is no greater than 60 hours?
c. What is the probability that the life span of a randomly selected bulb is greater than 60 hours?
d. What is the expected life span of a randomly selected bulb?
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Related Book For
Calculus For Business, Economics And The Social And Life Sciences
ISBN: 9780073532387
11th Brief Edition
Authors: Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price
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