Find the mean temperature for the entire day

Reference no: EM131813719

Question: One water quality standard for water that is discharged into a particular type of stream or pond is that the average daily water temperature be at most 18°C. Six samples taken throughout the day gave the data:

16.8 21.5 19.1 12.8 18.0 20.7

The sample mean x¯ = 18.15 exceeds 18, but perhaps this is only sampling error. Determine whether the data provide sufficient evidence, at the 10% level of significance, to conclude that the mean temperature for the entire day exceeds 18°C.

Reference no: EM131813719

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