To construct a confidence interval for the difference between two population means u, - p,, 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. (* 2) -

To construct a confidence interval for the difference between two population means u, - p,, 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. (* 2) -

MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Estimation

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Question

To construct a confidence interval for the difference between two population means HA - u2, 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
(* 2) -
<H -#2< (X1 -X2 +Z¢
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, =$107 250, n, =41, and o, = S9120, x, = 585.250, n, = 35, and o, = $9135
Complete the 95% cenfidence interval for u, - 2 below.
(Round to the nearest dollar as needed)

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