Use the following to answer questions:
Figure: Demand Curves 
-(Figure: Demand Curves) Look at the figure Demand Curves. Which graph shows a perfectly inelastic demand curve?
Definitions:
Null Hypothesis
A statistical hypothesis that proposes there is no significant difference or effect.
Alternative Hypothesis
A statement in hypothesis testing that suggests a significant difference or relationship exists between variables, contrasting the null hypothesis.
Type I Error
The incorrect rejection of a true null hypothesis, also known as a "false positive."
P-value
A measure in statistical hypothesis testing representing the probability of observing a statistic at least as extreme as the one observed, under the assumption that the null hypothesis is true.
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