As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance o² and the population standard deviation o. Use a 95% level of confidence. Assume that the population has a normal distribution. n = 22 s=13 grains per gallon What is the confidence interval for the population variance o²? ((Round to one decimal place as needed.) '
As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance o² and the population standard deviation o. Use a 95% level of confidence. Assume that the population has a normal distribution. n = 22 s=13 grains per gallon What is the confidence interval for the population variance o²? ((Round to one decimal place as needed.) '
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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Question
![As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are
shown below. Construct a confidence interval for the population variance o² and the population standard deviation o.
Use a 95% level of confidence. Assume that the population has a normal distribution.
n = 22
s=13 grains per gallon
What is the confidence interval for the population variance o²?
((Round to one decimal place as needed.)
'](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F36f3dd43-c2dd-4f90-ba08-6251a98b13b7%2F66ef3bfb-079a-4228-8bcf-442a4946e1ee%2Fonfw2ux_processed.jpeg&w=3840&q=75)
Transcribed Image Text:As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are
shown below. Construct a confidence interval for the population variance o² and the population standard deviation o.
Use a 95% level of confidence. Assume that the population has a normal distribution.
n = 22
s=13 grains per gallon
What is the confidence interval for the population variance o²?
((Round to one decimal place as needed.)
'
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