
Answer:
The chance of getting exactly 3 hits is = Â 0.20
Step-by-step explanation:
P.S - The exact question is -
As given,
F(x) = 0 , Â Â Â Â Â x < 1
     0.30 ,   1  ≤ x < 2
     0.56 ,   2 ≤ x < 3
     0.76 ,   3 ≤ x < 4
     0.9 ,    4  ≤ x < 5
     1 ,       5  ≤ x
Now,
f(x) = 0.30 , Â Â Â Â Â Â Â Â Â Â Â Â Â Â x = 1
    0.56 - 0.30 = 0.26 ,   x = 2
     0.76 - 0.56 = 0.20 ,   x=3
     0.9 - 0.76 = 0.14  ,    x = 4
     1 - 0.9 = 0.1 ,         x = 5
     0,                 otherwise
Now,
The chance of getting exactly 3 hits is = f(x = 3) = 0.20