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a newspaper article reported that people spend a mean of 7 hours per day watching tv with a standard deviation of 1.9 hours. a psychologist
a newspaper article reported that people spend a mean of 7 hours per day watching tv with a standard deviation of 1.9 hours. a psychologist would like to conduct interviews with the 20% of the population who spend the most tie watching tv. she assumes that the daily time people spend watching tv is normally distracted. at least how many hours of daily tv watching are necessary for a person to be eligible for the interview.
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