Two Dice.

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Presentation transcript:

Two Dice

First dice Second dice Six Six Not six Six Not six Not six

PROBABILITIES First dice Second dice Six Not six Not Six

PROBABILITIES First dice Second dice Six Not six Not Six

The probability that Colin is late for work, on any given day = 0.2

First day Second day Late Late Not late Late Not late Not late

PROBABILITIES First day Second day Late 0.2 0.2 Late Not late 0.8 Late 0.2 0.8 Not late Not late 0.8

PROBABILITIES First day Second day Late 0.2 x 0.2 = 0.04 0.2 Late Not late 0.2 0.8 0.2 x 0.8 = 0.16 Not late 0.8 Late 0.2 0.8 x 0.2 = 0.16 Not late 0.8 0.8 x 0.8 = 0.64

TASK 1 Make up a story of your own Draw a tree diagram Label all possible outcomes

Colin has a tin of sweets: 6 chocolates and 4 mints Produce a tree diagram to show the probabilities of taking one sweet followed by another sweet. What is the probability of taking two of the same type?

First sweet Second sweet Chocolate Chocolate Mint Chocolate Mint Mint

PROBABILITIES First sweet Second sweet C C M C M M

What is the probability of taking two of the same type? Chocolate and chocolate = Mint and mint = So two of the same =

A bag contains 8 marbles, 5 are red and 3 are green A bag contains 8 marbles, 5 are red and 3 are green. Two marbles are taken out, one at a time and not replaced. Draw a probability tree to show the different probabilities.