CÂU HỎI 20 (SINGLECHOICE)
Given that X is a discrete random variable with the cumulative distribution function
x<0
0.15
0≤x≤5
F(x)= 0.4
5≤x≤20.
0.7
20≤x≤30
[1
30≤x
Determine P(X=1) and P(2<X≤25).
0.15 and 0.85
0.15 and 0.55
0 and 0.55
O and 0.7
0.15 and 0.3
