The average zinc concentration recovered from a sample of measurements taken in 12 different locations in a river is fou
Posted: Sun Oct 03, 2021 11:17 am
The average zinc concentration recovered from a sample of measurements taken in 12 different locations in a river is found to be 3.1 grams per milliliter. Assume that the population standard deviation is 1.8 gram per milliliter. Determine the lower limit of the 72.86% confidence intervals for the mean zinc concentration in the river. [The answer should be a number rounded to five decimal places, don't use symbols such as %] Determine the upper limit of the 72.86% confidence intervals for the mean zinc concentration in the river. [The answer should be a number rounded to five decimal places, don't use symbols such as %]