deviation is within 30% 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? mally 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 To be 95% confident that s is 1% 5% 10% 20% 30% 40% 50% 48 21 12 8 1% 5% 10% 20% 30% 40% 50% 85 38 22 14 6 within of the value of a, the sample size 19,205 768 192 n should be at least To be 99% confident that s is within of the value of a, the sample size 33,218 1,336 336 n should be at least The minimum sample size needed is

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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 30% 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
1% 5% 10%
20% 30% 40% 50%
48 21 12 8
30% 40% 50%
38 22 14
within
of the value of a, the sample size 19,205 768
n should be at least
To be 99% confident that s is
192
The minimum sample size needed is.
within
of the value of a, the sample size 33,218 1,336 336
In should be at least
1% 5% 10% 20%
85
+
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 30% 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 1% 5% 10% 20% 30% 40% 50% 48 21 12 8 30% 40% 50% 38 22 14 within of the value of a, the sample size 19,205 768 n should be at least To be 99% confident that s is 192 The minimum sample size needed is. within of the value of a, the sample size 33,218 1,336 336 In should be at least 1% 5% 10% 20% 85 +
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