Page 33 - E-Modul Peluang SMP

Dadu II
Dadu I 1 2 3 4 5 6

1 (1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6)
2 (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)
3 (3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6)

4 (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)
5 (5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6)

6 (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)
(i)

S
C D

• (1, 1) • (2, 4)
• (1, 2) • (3, 4)

• (1, 3) • (1, 4) • (4, 4)

• (1, 5) • (5, 4)
• (1, 6) • (6, 4)

(ii)

Gambar 1.7

Perhatikan Gambar 1.7 di atas!

Peluang kejadian dan di atas dapat dinyatakan dengan cara
berikut.

= {(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6)}, maka ( ) = 6
= {(1, 4), (2, 4), (3, 4), (4, 4), (5, 4), (6, 4)}, maka ( ) = 6

∩ = {(1, 4)}, maka ( ∩ ) = 1
Peluang kejadian dan = ( ∩ )

1
=
36
Amatilah, antara nilai peluang kejadian , kejadian , dan kejadian

( ∩ ) terdapat hubungan berikut:
6 1 6 1 1
( ) = = , ( ) = = , dan ( ∩ ) =
36 6 36 6 36

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