After careful ethical review of planned procedures, a researcher tests a new brain activation drug by taking a sample of 50 volunteers and randomly assigning 25 participants to the treatment condition and 25 to the control (placebo)condition.She then carries out an fMRI scan to assess the level of activation in regions of the participants' brains 30 minutes after administering the drug.She carries out a between-participants t-test in SPSS which provides the output shown below: What is the best summary of the outcome of this t-test?
A)The difference between conditions is significant.
B)The differences between conditions is significant with an alpha level of .05.
C)The difference between conditions is not significant.
D)The differences between conditions is marginally significant.
E)The treatment is obviously effective.

Question

After careful ethical review of planned procedures, a researcher tests a new brain activation drug by taking a sample of 50 volunteers and randomly assigning 25 participants to the treatment condition and 25 to the control (placebo)condition.She then carries out an fMRI scan to assess the level of activation in regions of the participants' brains 30 minutes after administering the drug.She carries out a between-participants t-test in SPSS which provides the output shown below:  What is the best summary of the outcome of this t-test?
A)The difference between conditions is significant. 
B)The differences between conditions is significant with an alpha level of .05. 
C)The difference between conditions is not significant. 
D)The differences between conditions is marginally significant. 
E)The treatment is obviously effective.

Quizplus · Accepted Answer

The Answer of After careful ethical review of planned procedures, a researcher tests a new brain activation drug by taking a sample of 50 volunteers and randomly assigning 25 participants to the treatment condition and 25 to the control (placebo)condition.She then carries out an fMRI scan to assess the level of activation in regions of the participants' brains 30 minutes after administering the drug.She carries out a between-participants t-test in SPSS which provides the output shown below:  What is the best summary of the outcome of this t-test?
A)The difference between conditions is significant. 
B)The differences between conditions is significant with an alpha level of .05. 
C)The difference between conditions is not significant. 
D)The differences between conditions is marginally significant. 
E)The treatment is obviously effective.

After Careful Ethical Review of Planned Procedures, a Researcher Tests