Explicate probability using discrete distribution
Explain the probability distribution for the random variable x follows
|
X
|
f(x)
|
|
20
|
0.2
|
|
25
|
0.15
|
|
30
|
0.25
|
|
35
|
0.4
|
1) Is this probability distribution valid? Explain
2) What is the probability that x = 30?
3) What is the probability that x is less than or equal to 25?
4) What is the probability that x is greater than 30?