What is the probability that a randomly selected child from this group will have red hair, given that he has straight hair? (Enter your answer as a fraction.)

Your question was incomplete, as the values are not given.

I guess these are the values you are talking about.

Hair Type Brown Blond Black Red Totals

Wavy 20 5 15 3 43

Straight 80 15 65 12 172

Totals 100 20 80 15 215

Now w have to find out the probability of a child with red, straight hair.

Total no of children with straight hair are = 172

The children having straight red hair = 12

The probability of selected child = 12/172.