76.10121415t95%2.452.372.312.262.212.172.151.96 2. The determination of copper in a seawater sample gave a mean value of 77.81 mg/L and astandard deviation s; of 1.74 mg/L. How many samples must be analyzed to obtain an acceptablerelative uncertainty of 1.7% in the results at the 95% confidence level?

Critical value: The confidence level is 100*(1–α)% = 95%. The critical value is obtained as 1.96…

The determination of copper in a seawater sample gave a mean value of 77.81 mg/L and a ndard deviation ss of 1.74 mg/L. How many samples must be analyzed to obtain an acceptable ative uncertainty of 1.7% in the results at the 95% confidence level?

The determination of copper in a seawater sample gave a mean value of 77.81 mg/L and a ndard deviation ss of 1.74 mg/L. How many samples must be analyzed to obtain an acceptable ative uncertainty of 1.7% in the results at the 95% confidence level?

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

7
6.
10
12
14
15
t95%
2.45
2.37
2.31
2.26
2.21
2.17
2.15
1.96

2. The determination of copper in a seawater sample gave a mean value of 77.81 mg/L and a
standard deviation s; of 1.74 mg/L. How many samples must be analyzed to obtain an acceptable
relative uncertainty of 1.7% in the results at the 95% confidence level?

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