7) The homogeneity of the chloride level in a water sample from a lake was by an analyst. Below are the concentration in parts per million (ppm) of C 27.32, 27.22, 27.21, 27.24, 27.20 i. Determine the mean and median.

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7) The homogeneity of the chloride level in a water sample from a lake was tested
by an analyst. Below are the concentration in parts per million (ppm) of Cl:
27.32, 27.22, 27.21, 27.24, 27.20
i.
Determine the mean and median.
i.
Calculate the confidence limit at 90%.
Identify a possible outlier and use the Q-test to determine whether it
can be retained or rejected at 90% confidence level
Transcribed Image Text:7) The homogeneity of the chloride level in a water sample from a lake was tested by an analyst. Below are the concentration in parts per million (ppm) of Cl: 27.32, 27.22, 27.21, 27.24, 27.20 i. Determine the mean and median. i. Calculate the confidence limit at 90%. Identify a possible outlier and use the Q-test to determine whether it can be retained or rejected at 90% confidence level
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