A survey of 35 college freshmen found that they average 6.12 hours of sleep each night. A 95% confidence interval had a margin of error of 0.515 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? 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.)
A survey of 35 college freshmen found that they average 6.12 hours of sleep each night. A 95% confidence interval had a margin of error of 0.515 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? 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.)
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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![A survey of 35 college freshmen found that they average 6.12 hours of sleep each night. A 95% confidence interval had a margin of error of 0.515.
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?
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 35 college freshmen found that they average 6.12 hours of sleep each night. A 95% confidence interval had a margin of error of 0.515.
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?
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.)
Help Me Solve This
View an Example
Get More Help -
Clear A)
Chec
search
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