Consider a study testing whether birds were equally likely to rest on each streetlight. Researchers surveyed 30 randomly chosen streetlights in a city known to have many birds and counted the number of birds resting on each streetlight. Data on the number of birds seen on the lights are shown. (Note: No lights had more than three birds.) Assuming a Poisson process, what is the expected number of streetlights without any birds?
?
$\begin{array}{|cc|}
\hline \begin{array}{l}
\text { Number } \
\underline {\text { birds }}
\end{array} & \begin{array}{l}
\text { Number } \
\underline {\text { of lights }}
\end{array} \
0 & 2 \
1 & 16 \
2 & 10 \
\geq 3 & 2 \
\hline
\end{array}$

Question

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The Answer of Consider a study testing whether birds were equally likely to rest on each streetlight. Researchers surveyed 30 randomly chosen streetlights in a city known to have many birds and counted the number of birds resting on each streetlight. Data on the number of birds seen on the lights are shown. (Note: No lights had more than three birds.) Assuming a Poisson process, what is the expected number of streetlights without any birds?
?
$\begin{array}{|cc|}
\hline \begin{array}{l}
\text { Number } \
\underline {\text { birds }}
\end{array} & \begin{array}{l}
\text { Number } \
\underline {\text { of lights }}
\end{array} \
0 & 2 \
1 & 16 \
2 & 10 \
\geq 3 & 2 \
\hline
\end{array}$

Consider a Study Testing Whether Birds Were Equally Likely to Rest