Dell-EMC
E20-007 · Question #141
You do a Student's t-test to compare the average test scores of sample groups from populations A and B. Group A averaged 10 points higher than group B. You find that this difference is significant…
The correct answer is C. There is a 3% chance that you have identified a difference between the populations when in reality. See the full explanation below for the reasoning.
Question
You do a Student's t-test to compare the average test scores of sample groups from populations A and B. Group A averaged 10 points higher than group B. You find that this difference is significant, with a p-value of 0.03. What does that mean?
Options
- AThere is a 3% chance that a sample group from population A will score 10 points higher that a sample
- BThe difference in scores between a sample from population A and a sample from population B will
- CThere is a 3% chance that you have identified a difference between the populations when in reality
- DThere is a 97% chance that a sample group from population A will score 10 points higher that a sample
How the community answered
(19 responses)- A11% (2)
- B5% (1)
- C84% (16)
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