Researchers conduct a study where they randomly

Researchers conduct a study where they randomly assign 80 participants to receive one of three levels of light conditions during sleep, sleeping in a dark room (S_Dark), sleeping in a Semi-Dark room (S_SDark), and sleeping in a Light room (S_Light). In the morning, the participants are given a cognitive test and the correct percentages are calculated. The means for the three groups are S-Dark=96.6, S_SDark=71.9, S_Light=46. The ANOVA F test had a p-value=.007. What is your statistical conclusion based on the ANOVA hypotheses? A. The group sleeping in a Light room had a lower mean than the other two groups. B. The means for the three conditions were not all equal C. The mean for the S-Dark group was significantly greater than the mean for the S-SDark group which was significantly greater than the mean for the S-Light group D. The mean for the S_Light group performed significantly better than the other two groups.

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