Question: Exercise 2 : Mixing A soil material was mixed in presence of 20% tracer. After 5 Sample No. minutes of mixing, 5 samples were randomly

Exercise 2 : Mixing A soil material was mixed in presence of 20% tracer. After 5 Sample No. minutes of mixing, 5 samples were randomly taken from the mix and analyzed. The measured concentrations in the sample are 1 illustrated in the below table. Calculate standard deviation of the 2 collected data and the mixing index (IP) and state weather the 3 mixing is adequate or not. (comment !) 4 5 Concentration (wt. %) 17.53 20.2 18.9 17.4 17.8

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