Determine whether the given function is a probability density function on the specified interval. 
Definitions:
Prime Time
The time period during which television audiences are the largest, often considered to be in the evening hours.
Scatterplot
A type of plot or mathematical diagram using Cartesian coordinates to display values for two variables for a set of data, showing the relationship between them.
Side-By-Side Bar Chart
A graphical representation that displays the comparison of multiple variables or groups side by side using bars, facilitating easy comparison.
Pie Chart
A graphical representation of data in the form of a circle divided into sectors, where each sector's angle and area proportionally represent a category's contribution to the total.
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