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Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table the minimum sample size needed to be 99% confident that the sample standard deviation s is within 40% of o. Is this sample size practical? To be 95% confident that s is within of the value of o, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size In should be at least 1% 5% 10% 20% 30% 40% 50% * 21 12 19,205 768 192 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 22 14

Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table the minimum sample size needed to be 99% confident that the sample standard deviation s is within 40% of o. Is this sample size practical? To be 95% confident that s is within of the value of o, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size In should be at least 1% 5% 10% 20% 30% 40% 50% * 21 12 19,205 768 192 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 22 14

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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Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table below to find the minimum sample size needed to be 99% confident that the sample standard deviation s is within 40% of o. Is this sample size practical? To be 95% confident that s is within of the value of o, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size In should be at least 1% 5% 10% 20% 30% 40% 50% * 21 12 19,205 768 192 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 22 14
Transcribed Image Text:Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table below to find the minimum sample size needed to be 99% confident that the sample standard deviation s is within 40% of o. Is this sample size practical? To be 95% confident that s is within of the value of o, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size In should be at least 1% 5% 10% 20% 30% 40% 50% * 21 12 19,205 768 192 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 22 14
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