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Please find out the answer with explanation Z-interval or Tinterval? In a recent study of 35 students, the mean number of hours per week watching

Please find out the answer with explanation

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Z-interval or Tinterval? In a recent study of 35 students, the mean number of hours per week watching tv was 28. The standard deviation of the population was 4.2. Find the 98% Condence interval of the mean time watching tvl

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