A simple random sample with n = 58 provided a sample mean of 23.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. ___________ to ____________ (b) Develop a 95% confidence interval for the population mean. ___________ to ____________ (c) Develop a 99% confidence interval for the population mean. __________ to ______________ (d) What happens to the margin of error and the confidence interval as the confidence level is increased? A.)As the confidence level increases, there is a larger margin of error and a wider confidence interval. B.)As the confidence level increases, there is a larger margin of error and a more narrow confidence interval. C.)As the confidence level increases, there is a smaller margin of error and a wider confidence interval. D.)As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval.
A simple random sample with n = 58 provided a sample mean of 23.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. ___________ to ____________ (b) Develop a 95% confidence interval for the population mean. ___________ to ____________ (c) Develop a 99% confidence interval for the population mean. __________ to ______________ (d) What happens to the margin of error and the confidence interval as the confidence level is increased? A.)As the confidence level increases, there is a larger margin of error and a wider confidence interval. B.)As the confidence level increases, there is a larger margin of error and a more narrow confidence interval. C.)As the confidence level increases, there is a smaller margin of error and a wider confidence interval. D.)As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval.
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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A simple random sample with
n = 58 provided a sample mean of 23.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.)
(a)
Develop a 90% confidence interval for the population mean.
___________ to ____________
(b)
Develop a 95% confidence interval for the population mean.
___________ to ____________
(c)
Develop a 99% confidence interval for the population mean.
__________ to ______________
(d)
What happens to the margin of error and the confidence interval as the confidence level is increased?
A.)As the confidence level increases, there is a larger margin of error and a wider confidence interval.
B.)As the confidence level increases, there is a larger margin of error and a more narrow confidence interval.
C.)As the confidence level increases, there is a smaller margin of error and a wider confidence interval.
D.)As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval.
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