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A Researcher Cross-Classified 386 Trout into Groups Based on Their

Question 19

Multiple Choice

A researcher cross-classified 386 trout into groups based on their species (all were in genus Salmo) and gender:
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 Species  Female  Male  Brown 6856 Flathead 9140 Ohrid 56 Sevan 6159\begin{array} { | l | l | l | } \hline \text { Species } & \text { Female } & \text { Male } \\\hline \text { Brown } & 68 & 56 \\\hline \text { Flathead } & 91 & 40 \\\hline \text { Ohrid } & 5 & 6 \\\hline \text { Sevan } & 61 & 59 \\\hline\end{array} A trout is to be selected at random. Given that the selected trout is male, what is the conditional probability that it is a Sevan trout?


A) 0.0776
B) 0.1717
C) 0.3665
D) 0.4516

Correct Answer:

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