SOLUTION: Q1 Suppose that the random variable X has the following cumulative distribution function: x -1 1 3 5 F(x) 1/4 1/2 3/4 1 Find the probability distribution of this random var

Algebra ->  Probability-and-statistics -> SOLUTION: Q1 Suppose that the random variable X has the following cumulative distribution function: x -1 1 3 5 F(x) 1/4 1/2 3/4 1 Find the probability distribution of this random var      Log On


   

Question 1028001: Q1
Suppose that the random variable X has the following cumulative distribution function:
x -1 1 3 5
F(x) 1/4 1/2 3/4 1
Find the probability distribution of this random variable.
Find p(x<3),p(x >=1 )
Find the mean of the random variable X.
Find the standard deviation of the random variable X.




Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
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P%28X%3C3%29=P%28-1%29%2BP%281%29=0.250%2B0.250=0.5
P%28X%3E=1%29=P%281%29%2BP%283%29%2BP%285%29=0.250%2B0.250%2B0.250=0.75
mu=2.0
sigma=2.291