Problem 6. Use the data in the accompanying table. (based on data from "Helmet Use and Risk of Head Injuries in Alpine Skiers and Snowboarders")
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone with a head injury.
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone who wore a helmet.
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone who had a head injury or wore a helmet.
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone who did not wear a helmet and was not injured.
Helmets and Injuries: If two different study subjects are randomly selected, find the probability that they both wore helmets, without replacement.
Helmets and Injuries: If two different study subjects are randomly selected, find the probability that they both had head injuries, without replacement.
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone who did not wear a helmet, given that the subject had head injuries.
Helmets and Injuries: If one of the subjects is randomly selected, find the probability of selecting someone who had head injuries, given that the subject wore a helmet.
Problem 7. (5 points) An IRS auditor randomly selects some tax returns from 59 returns, of which 9 contain errors. What is the probability that when selecting 3 tax returns, none of those containing errors?
What is the probability that when selecting 3 tax returns, at least one of those containing errors?
Problem 9. A graphing calculator randomly generates a number from 1 to 17. Let's define event A as generating a number that is odd. Let's define event B as generating a number that is greater than 6 and less than 12.
a) Find P(A)
b) Find P(B)
c) Find P(A and B)