Complement of Events, Guessing. How do I setup a Guessing problem?
Six popular brands of cola are to be used in a blind taste study for consumer recognition.
A. If 3 distinct brands are chosen at random from the 6 and if a consumer is not allowed to repeat any answers, what is the probability that all 3 brands could be identified by just guessing?
B. If repeats are allowed in the 3 brands chosen at random from the 6 and if the consumer is allowed to repeat answers, what is the probability of correct identification of all 3 by just guessing?