Question

A discrete RV Y can take one of 5 values -2, -1, 0, 1 and 2...

A discrete RV Y can take one of 5 values -2, -1, 0, 1 and 2 with equal probabilities. What is the CDF of the RV Y at y=1.5?

Math   Statistics-And-Probability   
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Answer #1
x P(X = x) P(X < = x)
-2
-1
0
1
2

The cdf of Y can be written as


So, The CDF of the RV Y at y=1.5 = FY(1.5) = ​​​​​​​

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