1.4 Non-Mutually- Exclusive (1/4)

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Presentation transcript:

1.4 Non-Mutually- Exclusive (1/4) Mutually Exclusive Events means that if one event occurs then the other does not. Not All Are !!!!!!

1.4 Non-Mutually- Exclusive (2/4) Venn Diagrams 5 Multiples of 2 Multiples of 3 1 6 14 2 9 4 3 10 12 7 8 15 11 13 for 1 to 15 Flash

1.4 Non-Mutually- Exclusive (3/4) P(A or B) = P(A) + P(B) - P(A and B) 5 A B Multiples of 2 Multiples of 3 1 6 2 9 4 3 10 12 7 8 11 13 P(Mult of 2 or 3) = 6/15 + 4/15 - 2/15 = 8/15

1.4 Non-Mutually- Exclusive (4/4) In a group of 20 boys, 11 play cricket and/or 15 play football. Cricketers Footballers 7 + 4 + 11 = 22 5 + 9 + 6 = 20 8 + 3 + 12 = 23 6 + 5 + 10 = 21 10+ 1 + 14 = 25 9 + 2 + 13 = 24 11+ 0 + 15 = 26 9 P(Play Both) = 20