The length of time to failure in hundreds of hours for a


The length of time to failure (in hundreds of hours) for a transistor is a random variable Y with cumulative distribution function given by the following: F(y)-e-y^2 for y >- greater than or equal to 0.

a. Find the pdf of y.

b. Find the probability the transistor operates for at least 200 hours.

c. What is the median operation time?

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Electrical Engineering: The length of time to failure in hundreds of hours for a
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