The life expectancy (in years) of a certain brand of clock radio is a continuous random variable with the probability density

Question

The life expectancy (in years) of a certain brand of clock radio is a continuous random variable with the probability density function below.
F(X)= {2/(x + 2)²1x20
0, otherwise
(A) Find the probability that a randomly selected clock lasts at most 4 years.
(B) Find the probability that a randomly selected clock radio lasts from 4 to 10 years.
(C) Graph y=f(x) for [0, 10] and show the shaded region for part (A).

Kunduz · Accepted Answer

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