Given:
The graph is:
Find-:
(a)
 Find the probability that a real number between 4 and 6 is picked.
(b)
 Find the probability that a real number between 4 and 7 is picked.
Explanation-:
The area of the region
[tex]\begin{gathered} \text{ Region }\rightarrow\text{ Area} \\  \\ A\rightarrow0.32 \\  \\ B\rightarrow0.56 \\  \\ C\rightarrow0.12 \end{gathered}[/tex]
The probability is:
[tex]P(A)=\frac{\text{ Favorable outcome}}{\text{ Total outcome}}[/tex]
The total outcomes is:
[tex]\begin{gathered} =0.32+0.56+0.12 \\  \\ =1 \end{gathered}[/tex]
(a)
Probability to the 4 and 6 
The 4 to 6v region is B
[tex]\begin{gathered} P(B)=\frac{\text{  favorable outcomes for B}}{\text{ Total outcomes}} \\  \\ P(B)=\frac{0.56}{1} \\  \\ P(B)=0.56 \end{gathered}[/tex]
(B)
Probability for 4 to 7 
The region B and C
[tex]\begin{gathered} 1. \\  \\ P(B\text{ and }C)=\frac{0.56+0.12}{1} \\  \\ =0.68 \end{gathered}[/tex]