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Contoh 5
Apakah kebarangkalian memperolehi skor
di antara 300 dan 600 untuk ujian GMAT
yang sama?
P(300 X < 600| = 494 dan 100) = ?
X = 300 = 494 X = 600
= 100
Z
Z
X -
X -
600- 494
100
300- 494
100
106
100
-194
100
1.06
1.94
P(-1.94 < Z < 1.06) = 0.3554 + 0.4738
= 0.8289
0.4738
0.3554
Z=-1.94 Z=0 Z=1.06
17
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