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and waterways and the average nitrogen content is found to be in 2.6 grams per milliliter. Find the 95% and 99% confidence intervals for the mean mercury content. Population standard deviation is 0.3 gram per milliliter. If the students want the error to be less than 0.05, how large a sample size would be required at 95% confidence? Would the required sample size increase if a higher degree of confidence is set? O a. 95% CI: 2.47

and waterways and the average nitrogen content is found to be in 2.6 grams per milliliter. Find the 95% and 99% confidence intervals for the mean mercury content. Population standard deviation is 0.3 gram per milliliter. If the students want the error to be less than 0.05, how large a sample size would be required at 95% confidence? Would the required sample size increase if a higher degree of confidence is set? O a. 95% CI: 2.47

MATLAB: An Introduction with Applications
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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CI on Mean, Variance Known Students on an internship program in the US Fish and Wildlife Service wishes to test the nitrogen content on rivers and waterways in the US Midwest states. 36 sample measurements were taken in various rivers and waterways and the average nitrogen content is found to be in 2.6 grams per milliliter. Find the 95% and 99% confidence intervals for the mean mercury content. Population standard deviation is 0.3 gram per milliliter. If the students want the error to be less than 0.05, how large a sample size would be required at 95% confidence? Would the required sample size increase if a higher degree of confidence is set? O a. 95% CI: 2.47 <u< 2.73; 99% CI: 2.50 < u < 2.70. Sample size should be 139. Sample size required will increase if the students set the % confidence higher O b.95% CI: 2.47 < µ< 2.73; 99% CI: 2.50 < µ< 2.70. Sample size should be 139. Smaller sample size required if the students set the % confidence higher O.95% CI: 2.50 <µ< 2.70; 99% CI: 2.47 < u< 2.73. Sample size should be 139. Sample size required will increase if the students set the % confidence higher O d.95% CI: 2.50 <µ< 2.70; 99% CI: 2.47 < u< 2.73. Sample size should be 138. Sample size required will increase if the students set the % confidence higher
Transcribed Image Text:CI on Mean, Variance Known Students on an internship program in the US Fish and Wildlife Service wishes to test the nitrogen content on rivers and waterways in the US Midwest states. 36 sample measurements were taken in various rivers and waterways and the average nitrogen content is found to be in 2.6 grams per milliliter. Find the 95% and 99% confidence intervals for the mean mercury content. Population standard deviation is 0.3 gram per milliliter. If the students want the error to be less than 0.05, how large a sample size would be required at 95% confidence? Would the required sample size increase if a higher degree of confidence is set? O a. 95% CI: 2.47 <u< 2.73; 99% CI: 2.50 < u < 2.70. Sample size should be 139. Sample size required will increase if the students set the % confidence higher O b.95% CI: 2.47 < µ< 2.73; 99% CI: 2.50 < µ< 2.70. Sample size should be 139. Smaller sample size required if the students set the % confidence higher O.95% CI: 2.50 <µ< 2.70; 99% CI: 2.47 < u< 2.73. Sample size should be 139. Sample size required will increase if the students set the % confidence higher O d.95% CI: 2.50 <µ< 2.70; 99% CI: 2.47 < u< 2.73. Sample size should be 138. Sample size required will increase if the students set the % confidence higher
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