Resposta:
80=79xp+81x(1-p)
79xp+81x(1-p)=8
79xp+81-81p=8
79xp-81p=80-81
p(79x-81)= -
p= -1/(79x-81)
p= 0,5
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Resposta:
80=79xp+81x(1-p)
79xp+81x(1-p)=8
79xp+81-81p=8
79xp-81p=80-81
p(79x-81)= -
p= -1/(79x-81)
p= 0,5