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A population has standard deviation o= 17.7. Part 1 of 2 (a) How large a sample must be drawn so that a 99.9% confidence interval for µ will have a margin of error equal to 4.9? Round the critical value to no less than three decimal places. Round the sample size up to the nearest integer. A sample size of is needed to be drawn in order to obtain a 99.9% confidence interval with a margin of error equal to 4.9. Part 2 of 2 (b) If the required confidence level were 99.5%, would the necessary sample size be larger or smaller? because the confidence level is (Choose one) ▼ (Choose one) ▼ X X

A population has standard deviation o= 17.7. Part 1 of 2 (a) How large a sample must be drawn so that a 99.9% confidence interval for µ will have a margin of error equal to 4.9? Round the critical value to no less than three decimal places. Round the sample size up to the nearest integer. A sample size of is needed to be drawn in order to obtain a 99.9% confidence interval with a margin of error equal to 4.9. Part 2 of 2 (b) If the required confidence level were 99.5%, would the necessary sample size be larger or smaller? because the confidence level is (Choose one) ▼ (Choose one) ▼ X X

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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A population has standard deviation o= 17.7. Part 1 of 2 (a) How large a sample must be drawn so that a 99.9% confidence interval for µ will have a margin of error equal to 4.9? Round the critical value to no less than three decimal places. Round the sample size up to the nearest integer. A sample size of is needed to be drawn in order to obtain a 99.9% confidence interval with a margin of error equal to 4.9. Part 2 of 2 (b) If the required confidence level were 99.5%, would the necessary sample size be larger or smaller? because the confidence level is (Choose one) (Choose one) X X 5
Transcribed Image Text:A population has standard deviation o= 17.7. Part 1 of 2 (a) How large a sample must be drawn so that a 99.9% confidence interval for µ will have a margin of error equal to 4.9? Round the critical value to no less than three decimal places. Round the sample size up to the nearest integer. A sample size of is needed to be drawn in order to obtain a 99.9% confidence interval with a margin of error equal to 4.9. Part 2 of 2 (b) If the required confidence level were 99.5%, would the necessary sample size be larger or smaller? because the confidence level is (Choose one) (Choose one) X X 5
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