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Abdul is researching a new drug to enhance memory. He hypothesizes this new drug will reduce the number of errors a rat makes while navigating a maze. He gives the drug to the experimental group and gives the control group a placebo. He then records the number of errors each rat makes while going through a maze.

In order to confirm or reject his hypothesis, Abdul needs to use which of the following?


A scatter plot to show the relationship between the drug and the number of errors made by each rat.


Descriptive statistics to show the mean between the experimental and control groups.


Histograms to demonstrate the differences in the number of errors committed by each group.


A correlation coefficient to show the strength and the direction of the relationship between the use of the drug and memory of the rats.


Inferential statistics to draw conclusions about the sample and the population.

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