Question

The table shows the number of boys and girls that have black, blonde, brown, or red hair color. What is the probability that a student is a boy with red hair? (round to nearest hundredth)

Hair Color Boys Girls
Black 4 5
Blonde 4 6
Brown 10 8
Red 2 1

Answer 1

2 of the 40 students are boys with red hair. If one is chosen at random, ...
the probability that the student is a boy with red hair is 2/40 = 0.05.

Answer 2

0.05

Explanation:

Given :

Hair Color Boys Girls

Black 4 5

Blonde 4 6

Brown 10 8

Red 2 1

Solution :

Since ware required to find the probability that a student is a boy with red hair.

Total no. of boys with red hair = 2

Total no. of students = 4+4+10+2+5+6+8+1=40

Thus the probability that a student is a boy with red hair =
`\frac{\text{No. of boys with red hair }}{\text{total no. of students }}`

⇒
`(2)/(40)`

⇒
`(1)/(20)`

⇒
`0.05`

Hence the probability that a student is a boy with red hair is 0.05