Presentation on theme: "More on Probability by David Palay. Review In how many ways can the debate team choose a president and a secretary if there are 10 people on the team?"— Presentation transcript:
In how many ways can the debate team choose a president and a secretary if there are 10 people on the team? Mrs. Marshall has 11 boys and 14 girls in her class. A.How many ways can she select 2 girls to pass out a snack? B.How many ways can she select 5 boys to pass out new books? C.How many ways can she select 3 students to carry a desk to the office?
The Monty Hall Problem Monty Hall, the host of Lets Make a Deal, used to offer contestants this situation: – There are three doors, behind one is a great prize (Lets go with new car for the sake of our example) and behind the other two doors are fake prizes (goats, is the usual example here) – The contestant is told to pick one door, but not to open it. The Host, Mr. Hall, then would open one of the two other doors to reveal one of the goats. – The contestant is now given the opportunity to switch his/her choice to the as-yet untouched & unpicked third door.
Extra Practice The chart describes the transportation methods for 162 travellers. If a traveller is selected at random, what is the probability that: P(ferry or train) P(ferry or rental car) P(train and ferry, or train and rental car)