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Mathematics, 06.05.2020 02:01 texas101st78

A sleep researcher studying the number of dreams people recall when asked to record their dreams for one week produced the data in the table above. Group X consisted of 100 people who observed early bedtimes, and Group Y consisted of 100 people who observed later bedtimes. What is the probability of randomly selecting a person who recalled at least 1 dream and belonged to Group Y?

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