Exercise 2. Let X be a discrete random variable with the cumulative
distribution function
0 x<1 
F(x)= 0.5 1≤x<3 1 x≥3
(1) Calculate the probability P {X ≤ 3}
(2) Calculate the probability P {1 ≤ X ≤ 2}

answer:

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explanation:

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answer:

explain:

we don't have any choices.