Question

Please help me, thank you!!!

Answer 1

We need to find the probability that a selected animal will be an threatened given they are a bird: P(T/B). So,

$P(T/B)= \frac{P(T\cap B)}{P(B)}$

Where, Probability of threatened animal that are birds:

$P(T \cap B)$ = $\frac{15}{475}$

and probability of bird=$\frac{90}{475}$

Therefore, P(T/B)= \frac{P(T\cap B)}{P(B)}

= $\frac{\frac{15}{475}}{\frac{90}{475}}$

=$\frac{15}{90}$

=0.1667

=16.67%