Delgado Wells
11/14/2024 · Primary School

QUESTION 8 8.1 At a certain school there are 64 boys in Grade 10 . Their sport preferences are indicated below: \begin{tabular}{ll} - 24 boys play soccer \\ - 28 boys play rugby \\ 10 boys play both soccer and rugby \\ 22 boys do not play soccer or rugby \\ 8.1 .1 & Represent the information above in a Venn diagram. \\ 8.1 .2 & \( \begin{array}{l}\text { Calculate the probability that a Grade } 10 \text { boy at the school, selected at } \\ \text { random, plays: }\end{array} \) \\ (a) Soccer and rugby & (b) Soccer or rugby \\ 8.1 .3 & \( \begin{array}{l}\text { Are the events a Grade } 10 \text { boy plays soccer at the school and a Grade } 10 \\ \text { boy plays rugby at the school, mutually exclusive? Justify your answer. }\end{array} \) \\ \hline\end{tabular}

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- **8.1.1**: Venn diagram with counts: Only Soccer: 14, Only Rugby: 18, Both: 10, Neither: 22. - **8.1.2**: - (a) \( P(S \cap R) = \frac{5}{32} \) - (b) \( P(S \cup R) = \frac{21}{32} \) - **8.1.3**: The events are not mutually exclusive.

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