DA0-002 Data Analysis Practice Question
A data analyst is testing whether a new website layout increases conversion rate. The p-value from the test is 0.03. Using a significance level of 0.05, what is the correct conclusion?
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; the new layout significantly increases conversion rate
Since p-value (0.03) < α (0.05), we reject the null hypothesis and conclude there is a statistically significant difference.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Reject the null hypothesis; the new layout significantly increases conversion rate
Why this is correct
Correct interpretation.
- ✗
The test is inconclusive because p-value is greater than 0.01
Why it's wrong here
p=0.03 < 0.05, so it is significant at 0.05 level.
- ✗
Accept the null hypothesis; the new layout has no effect
Why it's wrong here
We never accept H0; we either reject or fail to reject.
- ✗
Fail to reject the null hypothesis; the new layout does not increase conversion rate
Why it's wrong here
p < α means reject H0.
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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.