To construct a confidence interval for the difference between two population means u, -H2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n, 2 30 and n2 2 30. Also, the samples must be randomly selected and independent. o o °z+ (%- x) > 래 - 내> -+의2-(x-x) n2 The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a 95% confidence interval for the difference between the mean annual salaries. x, =$102,110, n, = 39, and o, = $9130; x, = $85,410, n, = 35, and o, = $9145 Complete the 95% confidence interval for u, -H, below. (Round to the nearest dollar as needed.)
To construct a confidence interval for the difference between two population means u, -H2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n, 2 30 and n2 2 30. Also, the samples must be randomly selected and independent. o o °z+ (%- x) > 래 - 내> -+의2-(x-x) n2 The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a 95% confidence interval for the difference between the mean annual salaries. x, =$102,110, n, = 39, and o, = $9130; x, = $85,410, n, = 35, and o, = $9145 Complete the 95% confidence interval for u, -H, below. (Round to the nearest dollar as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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![To construct a confidence interval for the difference between two population means µ1 - H2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n, 2 30
and n2 2 30. Also, the samples must be randomly selected and independent.
2
.2
1
<H1 - H2< (x1 - X2) + Zc
+ -
+
n1
n2
n1
n2
°z- (2x - x)
The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a 95% confidence interval for the difference between the mean annual salaries.
X, = $102,110, n, = 39, and o, = $9130; x, = $85,410, n2 = 35, and o2 = $9145
Complete the 95% confidence interval for u, - H2 below.
$]<H1 - H2 < $]
(Round to the nearest dollar as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0a5c34e-0203-4ec1-a4e7-8e66c2a065e5%2Fe1dc4875-7b73-4da7-a071-1477f9669607%2Fktbeqjx_processed.png&w=3840&q=75)
Transcribed Image Text:To construct a confidence interval for the difference between two population means µ1 - H2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n, 2 30
and n2 2 30. Also, the samples must be randomly selected and independent.
2
.2
1
<H1 - H2< (x1 - X2) + Zc
+ -
+
n1
n2
n1
n2
°z- (2x - x)
The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a 95% confidence interval for the difference between the mean annual salaries.
X, = $102,110, n, = 39, and o, = $9130; x, = $85,410, n2 = 35, and o2 = $9145
Complete the 95% confidence interval for u, - H2 below.
$]<H1 - H2 < $]
(Round to the nearest dollar as needed.)
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