Bolton Valdez
08/28/2024 · Primary School
QUESTĀO 2: Numa pesquisa sobre preferência entre dois refrigerantes, Coca-Cola e guaraná, obtivemos o seguinte resultado: 20 tomam guaraná, 15 tomam Coca-Cola 8 tomam os dois e 3 não tomam nenhum dos dois. Sorteando-se uma pessoa ao acaso, calcule a probabilidade de ela tomar guaçaná ou Coca-Cola? \( \begin{array}{llll}\text { a) } 5 / 6 & \text { b) } 5 / 12 & \text { c) } 2 / 5 & \text { d) } 9 / 10 \\ \text { e) } 7 / 30\end{array} \)
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A probabilidade de uma pessoa tomar guaraná ou Coca-Cola é \( \frac{9}{10} \).
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