SOLUTION: Suppose that the random variable Y has probability distribution given by: y p(y) -2 0.11 0 0.32 3 0.57 Find the mean, variance, and standard deviation of Y .

Question 1034553: Suppose that the random variable Y has probability distribution given by:

y p(y)
-2 0.11
0 0.32
3 0.57
Find the mean, variance, and standard deviation of Y .
μ Y =
σ 2 Y =
σ Y =
What is the probability that Y is between μ Y −3σ Y and μ Y +3σ Y ? You may find it helpful to draw a probability histogram and mark μ Y , μ Y −3σ Y , and μ Y +3σ Y .
P(μ Y −3σ Y
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
.
Now

==> , to three significant figures

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