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

Understand the process and evidence supporting the endosymbiotic theory.

Identify and describe the structures not surrounded by one or more membranes.

Compare and contrast the extracellular matrix of animal cells with the plant cell wall.

Recognize the evolutionary steps leading to the formation of the cell nucleus and other organelles in eukaryotic cells.

---

Definitions:

Venn Diagram

A diagram that uses circles to represent the relationships among various sets or groups of things.

Traditional View

A conventional perspective or belief that has been long established through historical or cultural practice.

Existential Import

The presupposition that a statement implies the existence of the subject it mentions.

Venn Diagram

A diagram representing mathematical or logical sets pictorially as circles or closed curves within an enclosing rectangle (the universal set), common elements of the sets being represented by intersections of the circles.