SDS Exam Dumps | Which of these statements reflects a null hypothesis?

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DASCA.SDS.v2025-10-13.q37
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Question 6/37

Which of these statements reflects a null hypothesis?

A. There will be no relationship between caffeine consumption and performance

B. Men will score higher than women on spatial awareness

C. Women will score higher than men on empathy

D. There will be a significant difference between group 1 and group 2

E. As temperature increases, so too will the level of aggression

Correct Answer: A

A null hypothesis (H#) is the default assumption in statistical testing that there is no effect, no difference, or no relationship between variables.
Option A: Correct. This states explicitly that there is no relationship between caffeine consumption and performance # fits the definition of a null hypothesis.
Options B, C, D, E: These all hypothesize differences or relationships # they are examples of alternative hypotheses (H#), not null.
Thus, the correct answer is Option A.
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Statistics in Data Science: Hypotheses, Errors, and Testing.

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