Consider a Study Testing Whether Birds Were Equally Likely to Rest

question 16

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.) What is the variance for the number of birds observed on each light?
?
$\begin{array}{|cc|}\hline \begin{array}{l}\text { Number } \\\underline {\text { birds }}\end{array} & \begin{array}{l}\text { Number } \\\underline {\text { of lights }}\end{array} \\0 & 2 \\1 & 16 \\2 & 10 \\\geq 3 & 2 \\\hline\end{array}$

• A) 0.32
• B) 0.52
• C) 0.72
• D) 0.92

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Definitions:

GMO

Genetically Modified Organisms; organisms whose genetic material has been altered using genetic engineering techniques.

Agricultural Application

The use of various techniques, tools, and materials in farming and crop production to increase efficiency and productivity.

Glyphosate

A broad-spectrum systemic herbicide used to kill weeds, especially annual broadleaf weeds and grasses that compete with crops.

DNA Cloning

Set of methods that uses living cells to mass-produce targeted DNA fragments.