The graph displays the number of tickets available (not yet sold) for the number of hours since the theater opened at noon. Calculate the slope for the Shoot-em Up line and interpret its meaning. 
Definitions:
Test Performance
An evaluation of the efficacy or success of a test, often in the context of education or software testing.
False Null Hypothesis
A hypothetical error that occurs when a true null hypothesis is incorrectly rejected.
Type II Error
The statistical error that occurs when a test fails to reject a false null hypothesis, also known as a "false negative."
Sample Size
Refers to the number of observations or data points collected in a sample from a population for the purpose of statistical analysis.
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