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20 votes
20 votes
At a hot air balloon festival, Brendan made note of how many passengers were in each balloon and the color of each balloon. Blue Yellow Green Orange Purple 7 1 passenger 10 7 2 8 8 1 2 passengers 3 1 4 Are the events "the hot air balloon contains 1 passenger" and "the hot air balloon is orange" independent? yes no

User Ddrace
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1 Answer

12 votes
12 votes

In order to have independents events, we need to verify the following equation:


P(A\cap B)=P(A)\cdot P(B)

If event A is "the hot air balloon contains 1 passenger", the probability of this event is the sum of the number of balloons with 1 passenger divided by the total number of balloons:


\begin{gathered} P(A)=(7+10+7+2+8)/(7+10+7+2+8+8+1+3+1+4) \\ P(A)=(34)/(51)=(2)/(3) \end{gathered}

If event B is "the hot air balloon is orange

User Alexandr Dorokhin
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