An industrial plant dumps its waste into a nearby river and you want to investigate the level of calcium concentration downstream to determine if it might be negatively impacting the native fish. So you measure the calcium concentration from a random sample of 15 locations in the river and calculate a mean of 96.9 mg/L, with a standard deviation of 3.1 mg/L. Estimate the mean calcium concentration in the river with 95% confidence. Given: critical value = 2.15
An industrial plant dumps its waste into a nearby river and you want to investigate the level of calcium concentration downstream to determine if it might be negatively impacting the native fish. So you measure the calcium concentration from a random sample of 15 locations in the river and calculate a mean of 96.9 mg/L, with a standard deviation of 3.1 mg/L. Estimate the mean calcium concentration in the river with 95% confidence. Given: critical value = 2.15
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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
Transcribed Image Text:2. An industrial plant dumps its waste into a nearby river and you want to investigate the
level of calcium concentration downstream to determine if it might be negatively
impacting the native fish. So you measure the calcium concentration from a random
sample of 15 locations in the river and calculate a mean of 96.9 mg/L, with a standard
deviation of 3.1 mg/L. Estimate the mean calcium concentration in the river with 95%
confidence. Given: critical value = 2.15
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