Question

The probability distribution for the random variable x follows.
x f(x)
20 ......... .20
25 ......... .15
30 ......... .25
35 ......... .40
a. Is this probability distribution valid? Explain.
b. What is the probability that x = 30?
c. What is the probability that x is less than or equal to 25?
d. What is the probability that x is greater than 30?


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  • CreatedSeptember 20, 2015
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