To construct a confidence interval for the difference between two population means u1 - #2, 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 ną 2 30. Also, the samples must be randomly selected and independent. (*1 -2) -ze n1 n2 °z+ (x- lx) > Z1 - hrl> n1 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, = $102,480, n, = 35, and o, = $9155; x2 = $85,700, n2 = 38, and o2 = $9180 .... Complete the 95% confidence interval for Hy - H2 below. ]
To construct a confidence interval for the difference between two population means u1 - #2, 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 ną 2 30. Also, the samples must be randomly selected and independent. (*1 -2) -ze n1 n2 °z+ (x- lx) > Z1 - hrl> n1 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, = $102,480, n, = 35, and o, = $9155; x2 = $85,700, n2 = 38, and o2 = $9180 .... Complete the 95% confidence interval for Hy - H2 below. ]
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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![To construct a confidence interval for the difference between two population means u, - 2, 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 n, 2 30. Also, the samples must be randomly selected and independent.
<Hy -H2< (X1 - X2)
+z.
n1
n2
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, = $102,480, n, = 35, and o, = $9155; x, = $85,700, n, = 38, and o, = $9180
Complete the 95% confidence interval for u, - H, below.
$<H1 -H2 <$]
(Round to the nearest dollar as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fda6faddd-a84f-4d8b-94b7-6f2c3fcecfb0%2F897bb895-9123-47e6-98b0-d239b1b01510%2Fpxrahvx_processed.png&w=3840&q=75)
Transcribed Image Text:To construct a confidence interval for the difference between two population means u, - 2, 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 n, 2 30. Also, the samples must be randomly selected and independent.
<Hy -H2< (X1 - X2)
+z.
n1
n2
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, = $102,480, n, = 35, and o, = $9155; x, = $85,700, n, = 38, and o, = $9180
Complete the 95% confidence interval for u, - H, below.
$<H1 -H2 <$]
(Round to the nearest dollar as needed.)
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