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What is the appropriate sample size, according to Cochran, that can be used for a population of N=2000 with a 95% confidence lev and a 5% level of precision? Used z = 1.96 and assume for the variability of 30%. NOTE: Rule: When the calculated sample size is not a whole number, it should be rounded up to the next higher whole number. Rounding up a sample size calculation for conservativeness ensures that your sample size will always be representative of the population. A) 278 B) 279 C) 323 D) 322

What is the appropriate sample size, according to Cochran, that can be used for a population of N=2000 with a 95% confidence lev and a 5% level of precision? Used z = 1.96 and assume for the variability of 30%. NOTE: Rule: When the calculated sample size is not a whole number, it should be rounded up to the next higher whole number. Rounding up a sample size calculation for conservativeness ensures that your sample size will always be representative of the population. A) 278 B) 279 C) 323 D) 322

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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What is the appropriate sample size, according to Cochran, that can be used for a population of N=2000 with a 95% confidence level and a 5% level of precision? Used z = 1.96 and assume for the variability of 30%. NOTE: Rule: When the calculated sample size is not a whole number, it should be rounded up to the next higher whole number. Rounding up a sample size calculation for conservativeness ensures that your sample size will always be representative of the population. A 278 B 279 C) 323 (D) 322
Transcribed Image Text:What is the appropriate sample size, according to Cochran, that can be used for a population of N=2000 with a 95% confidence level and a 5% level of precision? Used z = 1.96 and assume for the variability of 30%. NOTE: Rule: When the calculated sample size is not a whole number, it should be rounded up to the next higher whole number. Rounding up a sample size calculation for conservativeness ensures that your sample size will always be representative of the population. A 278 B 279 C) 323 (D) 322
The average (arithmetic mean) of a list of 6 numbers is 20. If we remove one of the numbers, the average of the remaining numbers is 15. What is the number that was removed? A None of the above B 45 D 30 35
Transcribed Image Text:The average (arithmetic mean) of a list of 6 numbers is 20. If we remove one of the numbers, the average of the remaining numbers is 15. What is the number that was removed? A None of the above B 45 D 30 35
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