When our brains store information, complicated chemical changes take place. In t
ID: 3376608 • Letter: W
Question
When our brains store information, complicated chemical changes take place. In trying to understand these changes, researchers blocked some processes in brain cells taken from rats and compared these cells with a control group of normal cells. They say that "no differences were seen" between the two groups in four response variables. They give p-values 0.45, 0.83, 0.26, and 0.84 for these four comparisons.
Which of the following is correct?
It is literally true that "no differences were seen." That is, the mean responses were exactly alike in the two groups.Explanation / Answer
The given p values suggest that:
The statement "no differences were seen" means that the observed differences were not statistically significant at the significant level used by the researchers.
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