Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. The average LOS in the United States is 4.6 days (Healthcare Cost and Utilization Project Statistical Brief, December 2018). A random sample of 22 hospitals in one state had a mean LOS of 3.6 days and a standard deviation of 2.1 days. Assume that the sampled population is approximately normal. Complete parts a through c. Question content area bottom Part 1 a. Use a 99% confidence interval to estimate the population mean LOS for the state's hospitals. enter your response here, enter your response here (Round to three decimal places as needed.)
Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. The average LOS in the United States is 4.6 days (Healthcare Cost and Utilization Project Statistical Brief, December 2018). A random sample of 22 hospitals in one state had a mean LOS of 3.6 days and a standard deviation of 2.1 days. Assume that the sampled population is approximately normal. Complete parts a through c. Question content area bottom Part 1 a. Use a 99% confidence interval to estimate the population mean LOS for the state's hospitals. enter your response here, enter your response here (Round to three decimal places as needed.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Question
Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. The average LOS in the United States is 4.6 days
mean LOS of
(Healthcare
Cost and Utilization Project Statistical
Brief,
December 2018). A random sample of
22
hospitals in one state had a 3.6
days and a standard deviation of
2.1
days. Assume that the sampled population is approximately normal. Complete parts a through c.Question content area bottom
Part 1
a. Use a
interval to estimate the population mean LOS for the state's hospitals.
99%
confidence enter your response here, enter your response here
(Round to three decimal places as needed.)
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Follow-up Questions
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Follow-up Question
What is meant by the phrase
"99%
confidence interval" in this exercise?The phrase
sample size ,
then
"99%
confidence interval" means that if many intervals were constructed using the same methods and the same
▼
sample variance,
population variance,
sample mean ,
population mean,
sample standard deviation,
population standard deviation,
enter your response here%
of those intervals would contain the true
▼
population variance.
population standard deviation.
sample variance.
population mean.
sample standard deviation.
sample mean.
sample size.
Solution
by Bartleby ExpertFollow-up Question
The phrase
"99%
confidence interval" means that if many intervals were constructed using the same methods and the same
▼
sample variance,
population variance,
sample mean ,
population mean,
sample standard deviation,
population standard deviation,
then
enter your response here%
of those intervals would contain the true
▼
population variance.
population standard deviation.
sample variance.
population mean.
sample standard deviation.
sample mean.
sample size.
Solution
by Bartleby ExpertFollow-up Question
Interpret the interval in terms of this application. Choose the correct answer below.
The state is confident that
mean LOS is described by this interval.
99%
of its The state can be
1%
confident that its mean LOS is within this interval.The state can be
99%
confident that its mean LOS is outside this interval.The state can be
99%
confident that its mean LOS is
3.6
days.The state can be
99%
confident that its mean LOS is within this interval.
Solution
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