### Home > CCG > Chapter 11 > Lesson 11.1.3 > Problem 11-50

A snack cracker company conducted a taste test for the three different types of crackers it makes. It surveyed

Age | Cracker A | Cracker B | Cracker C |

Under | |||

Calculate the probability that a participant chose cracker A or was under

years old. Show how you used the Addition Rule. If the question says 'or' you must subtract the probability of 'and'.

% What is the probability that a participant did not choose cracker A and was over

years old? Show how you used a complement to answer this problem. To use the complement, reverse the method you used in part (a).

Subtractand from the total. What is the probability that a participant was

years old or older. Show how you used a complement to answer this problem. Use the same method from part (b).

A randomly-selected participant says he is

years old. What is the probability that he chose cracker A? Each age group only has

participants. %