Answer: 0.45
Step-by-step explanation:
From the given table, the number students have brown hair = \(10+8=18\)
The total number of students =\(4+5+4+6+10+8+2+1=40\)
Now, the probability that a student has brown hair is given by :-
\(P(Br)=\frac{\text{Students with brown hair}}{\text{Total students}}\\\\\Rightarrow\ P(Br)=\frac{18}{40}=0.45\)
Hence, the probability that a student has brown hair is 0.45
