Assume that the sample is a simple random sample obtained from a normally distributed population of flight delays at an airport. Use the table below to minimum sample size needed to be 95% confident that the sample standard deviation is within 1% of the population standard deviation. A histogram of those arrival delays suggests that the distribution is skewed, not normal. How does the distribution affect the sample size? To be 95% confident that s is within of the value of 6, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size n should be at least 1% 5% 10% 20% 30% 40% 50% 19,205 768 192 48 21 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 14
Assume that the sample is a simple random sample obtained from a normally distributed population of flight delays at an airport. Use the table below to minimum sample size needed to be 95% confident that the sample standard deviation is within 1% of the population standard deviation. A histogram of those arrival delays suggests that the distribution is skewed, not normal. How does the distribution affect the sample size? To be 95% confident that s is within of the value of 6, the sample size n should be at least To be 99% confident that s is within of the value of o, the sample size n should be at least 1% 5% 10% 20% 30% 40% 50% 19,205 768 192 48 21 1% 5% 10% 20% 30% 40% 50% 33,218 1,336 336 85 38 14
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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Transcribed Image Text:Assume that the sample is a simple random sample obtained from a normally distributed population of flight delays at an airport. Use the table below to find the
minimum sample size needed to be 95% confident that the sample standard deviation is within 1% of the population standard deviation. A histogram of a sample of
those arrival delays suggests that the distribution is skewed, not normal. How does the distribution affect the sample size?
To be 95% confident that s is
within
of the value of 6, the sample size
n should be at least
To be 99% confident that s is
within
of the value of o, the sample size
n should be at least
1% 5% 10% 20% 30% 40% 50%
19,205 768 192
48
21
1% 5% 10% 20% 30% 40% 50%
33,218 1,336 336
85
38
14
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