crystalradke420 crystalradke420
  • 21-04-2021
  • Mathematics
contestada

PA = 0.5 PB = 0.3 and p A and b equals 0.15 what is p A or b

Respuesta :

10011813
10011813 10011813
  • 21-04-2021

Answer:

P(A) = 0.2, P(B) = 0.5, P(A\B) = 0.3:

P(A\B) = P(A and B) P(B)

0.3 = P(A and B) 0.5

0.15 P(A and B)

P(A and B) = 0.15

B. P(A or B) = P(A) + P(B) - P(A and B)

0.2 + 0.5 - 0.15

0.70 - 0.15 = 0.55

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