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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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 alt="A survey of 33 college freshmen found that they average 6.63 hours of sleep each night. A 90% confidence interval had a margin of error of 0.497.
a. What are the lower and upper limits of the confidence interval?
b. What was the standard deviation, assuming that the population standard deviation is known?
3320
201
Ristrariis!
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a. The lower limit of the confidence interval is and the upper limit of the confidence interval is
(Round to three decimal places as needed.)
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Transcribed Image Text:A survey of 33 college freshmen found that they average 6.63 hours of sleep each night. A 90% confidence interval had a margin of error of 0.497.
a. What are the lower and upper limits of the confidence interval?
b. What was the standard deviation, assuming that the population standard deviation is known?
3320
201
Ristrariis!
Tersey
Tranto ele
Con
TERZS
SABALST
a. The lower limit of the confidence interval is and the upper limit of the confidence interval is
(Round to three decimal places as needed.)
S
20
136 Sierad
THE SENSO
Hengere
ANICURAT
call
THE FIRST T
PH
secon delay
THE POO
Le rasketdas
HUDWIKTSE
SURCH BENGUE
kin
Om Hallla
AS Triseny ute in
VETOVATILE
nin
ne tok pal
TEREORGHINKIN
LEMPANon=
LAINAN
HOTAR ESTA
N
WHAN ORS
DDY
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