Use the figure below to answer the following questions. 
Figure 18.3.1
-Refer to Figure 18.3.1.Choose the correct statement.
Definitions:
Z Statistic
A type of standard score that indicates how many standard deviations an element is from the mean of its population.
Normal Distribution
A bell-shaped frequency distribution curve that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.
One-tailed Test
A statistical hypothesis test in which the alternative hypothesis specifies a direction of the effect.
One-tailed Hypothesis Test
A statistical test in which the region of rejection is on only one side of the sampling distribution, used when a specific direction for the data is predicted.
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