A hospital wants to be 95% confident that its error is less than two hours in estimating the average time it takes to complete a surgical procedure. Previous studies indicate that the standard deviation is 4.5 hours. How large a sample must be selecte d?
A hospital wants to be 95% confident that its error is less than two hours in estimating the average time it takes to complete a surgical procedure. Previous studies indicate that the standard deviation is 4.5 hours. How large a sample must be selecte d?
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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![8105261 18step%3Dn
uestion Completion Status:
QUESTION 6
A hospital wants to be 95% confident that its error is less than two hours in estimating the average time it takes to complete
a surgical procedure. Previous studies indicate that the standard deviation is 4.5 hours. How large a sample must be selecte
d?
04
019
20
4 po
QUESTION 7
A nurse at a local hospital is interested in estimating thebirth weight of infants. How large a sample must she select if she de
sires to be 9996 confident that the true mean is within 4 ounces of the sample mean? The standard deviation of the birth wei
ghts is known to be 9 ounces.
wel
33
Save onde](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffddc283e-bfa7-4492-b564-1add28da6d82%2Fece53932-53a0-4e62-b808-8276868e72d2%2Fyquk7us_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8105261 18step%3Dn
uestion Completion Status:
QUESTION 6
A hospital wants to be 95% confident that its error is less than two hours in estimating the average time it takes to complete
a surgical procedure. Previous studies indicate that the standard deviation is 4.5 hours. How large a sample must be selecte
d?
04
019
20
4 po
QUESTION 7
A nurse at a local hospital is interested in estimating thebirth weight of infants. How large a sample must she select if she de
sires to be 9996 confident that the true mean is within 4 ounces of the sample mean? The standard deviation of the birth wei
ghts is known to be 9 ounces.
wel
33
Save onde
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