The mean interview time for a standard questionnaire of, Ask an Expert

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The mean interview time for a standard questionnaire of 31.3 minutes was considered to be excessive so the schedule was revised, yielding a mean interview time for a sample of 40 subjects of 21.3 minutes, with a standard deviation of 1.5 minutes. Have the researchers significantly reduced the interview times?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9391958

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