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Problem 5 - Entrance Test
A study claims that night shift work leads to sleep disorders because participants reported more insomnia. What assumption is critical here?
A. Night shift workers are more likely to seek medical help.
B. Sleep disorders are not caused by other shift types.
C. The sample size was statistically significant.
D. Participants accurately self-reported their symptoms.
Check Answer
Show Solution
Correct: D
The argument assumes self-reported data is reliable (Choice D). Without this, the causal link between shifts and insomnia cannot be validated.