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Um grupo de 100 estudantes de línguas, 20
escolheram Francês, 60 Inglês e 10 escolheram
ambas as línguas. Se for escolhido um estudante ao
acaso, a probabilidade de ter escolhido apenas
Inglês é:
a. 0,5
b. 0,6
a c. 0,1
d. 0,9

Ask by Mejia Gardner. in Mozambique
Nov 12,2024

Upstudy AI Solution

Tutor-Verified Answer

Answer

A probabilidade de escolher um estudante que escolheu apenas Inglês é 0,5.

Solution

Para resolver o problema, vamos primeiro determinar quantos estudantes escolheram apenas Inglês.
Temos as seguintes informações:
  • Total de estudantes: 100
  • Estudantes que escolheram Francês: 20
  • Estudantes que escolheram Inglês: 60
  • Estudantes que escolheram ambas as línguas: 10
Agora, vamos calcular quantos estudantes escolheram apenas Inglês:
Estudantes que escolheram apenas Inglês = Estudantes que escolheram Inglês - Estudantes que escolheram ambas as línguas
= 60 - 10
= 50
Agora, para encontrar a probabilidade de escolher um estudante que escolheu apenas Inglês, usamos a fórmula da probabilidade:
Probabilidade = (Número de estudantes que escolheram apenas Inglês) / (Total de estudantes)
Probabilidade = 50 / 100 = 0,5
Portanto, a probabilidade de escolher um estudante que escolheu apenas Inglês é 0,5.
A resposta correta é:
a. 0,5

Answered by UpStudy AI and reviewed by a Professional Tutor

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Extra Insights

Para determinar a probabilidade de escolher um estudante que escolheu apenas Inglês, primeiro precisamos calcular quantos estudantes escolheram somente Inglês. Dos 60 estudantes que escolheram Inglês, 10 escolheram ambas as línguas, então apenas 60 - 10 = 50 estudantes escolheram somente Inglês.
Agora, a probabilidade de escolher um estudante que escolheu apenas Inglês é o número de estudantes que escolheu apenas Inglês dividido pelo total de estudantes. Portanto, a probabilidade é:
P(Apenas Inglês) = 50 / 100 = 0,5.
A resposta correta é a alternativa a. 0,5.

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