An experiment was done to compare the effect of having a conversation via a hands-free mobile phone, having a conversation with an in-car passenger, and no distraction (baseline) on driving accuracy. Twenty participants from two different age groups (18–25 years and 26–40 years) took part. All participants in both age groups took part in all three conditions of the experiment (in counterbalanced order), and their driving accuracy was measured by a layperson who remained unaware of the experimental hypothesis.
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hich of the following sentences regarding the output below is correct?
A. The output shows that the assumption of sphericity has been violated, c2 (2) = 0.81, p = .17.
B. The output shows that the assumption of sphericity has been violated, c2 (2) = 3.58, p > .05.
C. The output shows that the assumption of sphericity has been met, c2 (2) = 0.81, p > .05.
D. The output shows that the assumption of sphericity has been met, c2(2) = 3.58, p = .17.
Answer: D
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