The amount of time, in hours, that a machine functions before breakdown is a continuous random variable

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The amount of time, in hours, that a machine functions before breakdown is a continuous random variable with pdf
f(t) ={120 0, -1/120 t20 <0.

What is the probability that this machine will function between 98 and 145 h before breaking down? What is the probability that it will function less than 160 h?

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Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

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