The life (in hours) of a certain kind of light bulb is a random variable with probability
Question:
The life (in hours) of a certain kind of light bulb is a random variable with probability density function defined by
(a) What is the expected life of such a bulb?
(b) Find σ.
(c) Find the probability that one of these bulbs lasts longer than 1 standard deviation above the mean.
(d) Find the median life of these bulbs.
Transcribed Image Text:
f(t) = 1 58 Vt for t in [1,900].
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a b c d The median life ...View the full answer
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