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Mathematics, 09.12.2019 04:31 embersongracie
Aneuroscientist measures the reaction times (in seconds) during an experimental session in a sample of cocaine-addicted (n = 8), morphine-addicted (n = 6), and heroin-addicted rats (n = 12). mean reaction times in each sample were 12, 13, and 17 seconds, respectively. what is the weighted mean for all three samples? hint: the overall mean is not 14.0 seconds. (round your answer to two decimal places.)
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