Questions: Endangered Species The chart below shows the numbers of endangered and threatened species both in the United States and abroad. Endangered Endangered Threatened Threatened ----------------------------------------------------------- United States Foreign United States Foreign Mammals 64 249 9 25 Birds 87 169 17 8 Reptiles 15 64 24 15 Amphibians 10 7 9 5 Choose one species at random. Find the probability of selecting the species for the following. Round your answer to at least three decimal places. Part 1 of 3 P(threatened and in the United States) = 0.076 Part 2 of 3 P(endangered foreign bird) =

Endangered Species The chart below shows the numbers of endangered and threatened species both in the United States and abroad. Endangered Endangered Threatened Threatened ----------------------------------------------------------- United States Foreign United States Foreign Mammals 64 249 9 25 Birds 87 169 17 8 Reptiles 15 64 24 15 Amphibians 10 7 9 5 Choose one species at random. Find the probability of selecting the species for the following. Round your answer to at least three decimal places. Part 1 of 3 P(threatened and in the United States) = 0.076 Part 2 of 3 P(endangered foreign bird) =
Transcript text: Endangered Species The chart below shows the numbers of endangered and threatened species both in the United States and abroad. \begin{tabular}{lcc|cc} & \multicolumn{2}{c|}{ Endangered } & \multicolumn{2}{c}{ Threatened } \\ \cline { 2 - 5 } & \begin{tabular}{l} United \\ States \end{tabular} & Foreign & \begin{tabular}{c} United \\ States \end{tabular} & Foreign \\ \hline Mammals & 64 & 249 & 9 & 25 \\ Birds & 87 & 169 & 17 & 8 \\ Reptiles & 15 & 64 & 24 & 15 \\ Amphibians & 10 & 7 & 9 & 5 \end{tabular} Choose one species at random. Find the probability of selecting the species for the following. Round your answer to at least three decimal places. Part 1 of 3 $P($ threatened and in the United States) $=0.076$ Part 2 of 3 \[ P(\text { endangered foreign bird })= \]
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Solution

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Solution Steps

Step 1: Identify the total number of species

First, calculate the total number of species by summing all the values in the table. The table includes endangered and threatened species in the United States and abroad for mammals, birds, reptiles, and amphibians.

\[ \text{Total species} = (64 + 249 + 9 + 25) + (87 + 169 + 17 + 8) + (15 + 64 + 24 + 15) + (10 + 7 + 9 + 5) \]

\[ \text{Total species} = 347 + 281 + 118 + 31 = 777 \]

Step 2: Identify the number of endangered foreign birds

From the table, the number of endangered foreign birds is 169.

Step 3: Calculate the probability

The probability \( P(\text{endangered foreign bird}) \) is the number of endangered foreign birds divided by the total number of species.

\[ P(\text{endangered foreign bird}) = \frac{169}{777} \approx 0.217 \]

Round the result to at least three decimal places:

\[ P(\text{endangered foreign bird}) \approx 0.217 \]

Final Answer

\(\boxed{0.217}\)

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