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A Biopsychologist Is Interested in Studying the Effects of Marijuana

Question 90

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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: 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: Based on the F ratio you just computed and the appropriate critical value (3.88) ,your decision would be to _______,suggesting that ______ a statistically significant effect of marijuana on the time it takes rats to complete the maze. A) reject H<sub>0</sub>;there is B) reject H<sub>0</sub>;there is not C) not reject H<sub>0</sub>;there is D) not reject H<sub>0</sub>;there is not
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: Based on the F ratio you just computed and the appropriate critical value (3.88) ,your decision would be to _______,suggesting that ______ a statistically significant effect of marijuana on the time it takes rats to complete the maze. A) reject H<sub>0</sub>;there is B) reject H<sub>0</sub>;there is not C) not reject H<sub>0</sub>;there is D) not reject H<sub>0</sub>;there is not
Based on the F ratio you just computed and the appropriate critical value (3.88) ,your decision would be to _______,suggesting that ______ a statistically significant effect of marijuana on the time it takes rats to complete the maze.


A) reject H0;there is
B) reject H0;there is not
C) not reject H0;there is
D) not reject H0;there is not

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