if one of the subjects is randomly selected find the probability of selecting someone who did not wear a helmet and was injured


head injuries not injured
wore helmet 96 656
no helmet 480 2330

Find the number of subjects who did not wear a helmet and were injured, divide this by the total number of subjects and you get the probability.

OK so I would divide 3562 by 480 because 480 didn't wear helmets and were injured and 3562 was the total number of people I got 7.42 is that correct

Read my post again to see which number should be divided by which number.

Remember that probabilities must always be between 0 and 1 inclusive.

3466\3562 or 0.973048849