Consider a Study Testing Whether Birds Were Equally Likely to Rest

question 2

Multiple Choice

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 with three or more birds?
?
$\begin{array}{|cc|}\hline \begin{array}{l}\text { Number } \\\underline {\text { birds }}\end{array} & \begin{array}{l}\text { Number } \\\underline {\text { of lights }}\end{array} \\0 & 3 \\1 & 12 \\2 & 9 \\\geq 3 & 6 \\\hline\end{array}$

• A) 5.50
• B) 6.50
• C) 7.50
• D) 8.50

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Definitions:

Agenda Setting

A communication theory that suggests the media has the power to determine which issues are considered important by the public.

Media

Means of mass communication, including newspapers, television, radio, and the internet, that disseminate information or entertainment to a wide audience.

Issues

Important topics or problems for debate or discussion.

Voter Turnout

The percentage of eligible voters who cast a ballot in an election, indicating the level of public participation in the democratic process.