ce Interval (CI)? (c) If sufficient numbers of soil samples were taken and the population was known to have a normal distribution with a mean of 25.5 mg/kg and standard deviation of 1.2 mg/kg, what would be the probability of a soil sam
A survey on the background concentration of lead in soil was conducted in an Environmental Impact Assessment of a former battery plant. Preliminary results of six soil samples in the protected area give results in mg/kg: 28, 32, 21, 29, 25, 22. (a) Is there any value in this data set that can be discarded as an outlier at 90% confidence level? (b) Calculate CV, RSD, and 95% Confidence Interval (CI)? (c) If sufficient numbers of soil samples were taken and the population was known to have a
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