DA0-002 Data Analysis Practice Question
An analyst is comparing the average sales of two different store locations using a t-test. The p-value obtained is 0.03, and the significance level is 0.05. What should the analyst conclude?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Reject the null hypothesis; there is a significant difference
Since p-value (0.03) < α (0.05), we reject the null hypothesis, indicating a statistically significant difference in mean sales between the two locations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Fail to reject the null hypothesis; no significant difference
Why it's wrong here
The p-value is less than alpha, so we reject the null.
- ✗
The test is inconclusive because the p-value is too low
Why it's wrong here
A low p-value is evidence against the null.
- ✓
Reject the null hypothesis; there is a significant difference
Why this is correct
Correct interpretation.
- ✗
Accept the null hypothesis; the means are equal
Why it's wrong here
We never accept the null; we either reject or fail to reject.
Go deeper
Related to this question
About these practice questions
One of 986 original DA0-002 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.