📊 GMAT Exam Prep

In hypothesis testing, what is a Type I error?

A Failing to reject a false null hypothesis
B Rejecting a true null hypothesis
C Making no decision
D Using a small sample

✓ Correct Answer: Option B

A Type I error (false positive) occurs when you reject the null hypothesis when it is actually true.

💡 Why is B) the correct answer?

The correct answer to the question "In hypothesis testing, what is a Type I error?" is Option B: Rejecting a true null hypothesis.

The other options — A) Failing to reject a false null hypothesis, C) Making no decision, D) Using a small sample — are incorrect for this GMAT Exam Prep question. As explained above: A Type I error (false positive) occurs when you reject the null hypothesis when it is actually true.

📚 About This GMAT Exam Prep Practice Question

This 3-level GMAT Exam Prep question from the Data Insights topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GMAT Exam Prep practice test or use flashcards for spaced repetition review.

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