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 99% confident that the sample standard deviation is within 20% 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 1% 5% 10% 20% 30% 40% 50% of the value of a, the sample size 19.20s 768 192 48 21 12 8 n should be at least To be 99% confident that s is within 1% 5% 10% 20% 30% 40% 50% of the value of e, the sample size b 2181,336 336 85 38 22 14 n should be at least The minimum sample size needed is A histogram of a sample of those arival delays suggests that the distribution is skewed, not normal. How does the distribution affect the sample size? OA The computed sample size should be multiplied by 2. OB. The computed minimum sample size is not likely comrect. OC. The computed minimum sample size is likely comrect. OD. The computed sample size should be dvided by 2.
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 99% confident that the sample standard deviation is within 20% 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 1% 5% 10% 20% 30% 40% 50% of the value of a, the sample size 19.20s 768 192 48 21 12 8 n should be at least To be 99% confident that s is within 1% 5% 10% 20% 30% 40% 50% of the value of e, the sample size b 2181,336 336 85 38 22 14 n should be at least The minimum sample size needed is A histogram of a sample of those arival delays suggests that the distribution is skewed, not normal. How does the distribution affect the sample size? OA The computed sample size should be multiplied by 2. OB. The computed minimum sample size is not likely comrect. OC. The computed minimum sample size is likely comrect. OD. The computed sample size should be dvided by 2.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 99% confident that the sample standard
deviation is within 20% 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 e, the sample size 19.205 768 192 48 21 12 8
n should be at least
To be 99% confident that s is
within
of the value of a, the sample size
n should be at least
1%
5%
10% 20% 30% 40% 50%
1%
5% 10% 20% 30% 40% 50%
ka2181.336 336 85 38 22
14
The minimum sample size needed is
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?
OA The computed sample size should be multiplied by 2.
OB. The computed minimum sample size is not likely correct
OC. The computed minimum sample size is likely correct.
OD. The computed sample size should be divided by 2.
Click to select your answerls).
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