A Biopsychologist Is Interested in Studying the Effects of Marijuana

question 24

Multiple Choice

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes) to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis:

What is the correct interpretation of the eta-squared?

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Definitions:

Real Purchasing Power

The amount of goods and services that can be purchased with a unit of currency, taking into account changes in prices due to inflation or deflation.

Income Effect

The change in an individual's consumption choices resulting from a change in real income, due to price changes or income changes.

Substitution Effect

The change in consumption patterns due to a change in relative prices, causing consumers to replace pricier items with more affordable substitutes.

Substitution Effect

The change in consumption patterns due to a change in relative prices, causing consumers to substitute away from more expensive items to cheaper alternatives.