Probability

Hi guys! Welcome back. Hopefully everyone enjoyed their holiday :] To start off the morning, Mr. K discussed our DEV projects. He also mentioned the pretty cool links along the right side that could help us study for our exam [y] We then started discussing and solving the following questions:



DEPENDENT PROBABILITY: Depends on the first step.
EX 1. A marble is drawn, not replaced and a second marble is drawn from the bag containing three red and three blue marbles. What is the probability that the second marble is blue?

INDEPENDENT PROBABILITY: Does not depend on the first step.
EX 1. A marble is drawn, replaced and a second marble is drawn from the bag containing three red and three blue marbles. What is the probability that the second marble is blue?

1a. A coin is flipped twice. Draw a tree diagram of the sample space and list the possibilities of each outcome.

b. A coin is flipped three times. Draw a tree diagram of the sample space and list the possibilities of each outcome.

In a family of three children, with boys and girls equally likely to be born, what is the probability that exactly two kids are girls?

oh and dont forget to accept your invitation to get access to the blog for your DEV project. afk kay now I have to go review for my english exam =S. the next scribe is ... JESSICCAI