(CI p# 1) You wish to estimate the population mean for salaries at a company by finding a 95% confidence interval. A sample of 30 employees gives a sample mean of $40,000. If the population standard deviation is known to be $12,000, calculate a 95% confidence interval for the mean. Below, state the: (1) lower limit of the Cl (2) upper limit of the CI (Round both to the nearest dollar. Use dollar sign and comma, but no pennies. For example: $14,542)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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(CI p#1) You wish to estimate the population mean for salaries at a company by
finding a 95% confidence interval. A sample of 30 employees gives a sample mean of
$40,000. If the population standard deviation is known to be $12,000, calculate a
95% confidence interval for the mean. Below, state the:
(1) lower limit of the Cl
(2) upper limit of the CI (Round both to the nearest dollar. Use dollar sign and
comma, but no pennies. For example: $14,542)
Transcribed Image Text:(CI p#1) You wish to estimate the population mean for salaries at a company by finding a 95% confidence interval. A sample of 30 employees gives a sample mean of $40,000. If the population standard deviation is known to be $12,000, calculate a 95% confidence interval for the mean. Below, state the: (1) lower limit of the Cl (2) upper limit of the CI (Round both to the nearest dollar. Use dollar sign and comma, but no pennies. For example: $14,542)
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