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1)Assume that the service life in years of a semiconductor is a random variable that has...

1)Assume that the service life in years of a semiconductor is a random variable that has the Weibull distribution with alpha = 5 and beta = 3. What is the probability that a semiconductor like that will still be in operational condition between 3.7 and the 5 years?

2)Assume that the service life in years of a semiconductor is a random variable that has the Weibull distribution with alpha = 2 and beta = 4. What is the probability that a semiconductor like that will still be in operational condition until 4.9 years ?

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