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You may need to use the appropriate appendix table or technology to answer this question. The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 n2 = 25 x1 = 13.6 x2 = 11.6 ?1 = 2.3 ?2 = 3

You may need to use the appropriate appendix table or technology to answer this question. The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 n2 = 25 x1 = 13.6 x2 = 11.6 ?1 = 2.3 ?2 = 3

MATLAB: An Introduction with Applications
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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You may need to use the appropriate appendix table or technology to answer this question.
The following results come from two independent random samples taken of two populations.
Sample 1 Sample 2
n1 = 50
n2 = 25
x1 = 13.6
x2 = 11.6
?1 = 2.3
?2 = 3
(a)
What is the point estimate of the difference between the two population means? (Use 
x1 − x2.)
 
(b)
Provide a 90% confidence interval for the difference between the two population means. (Use 
x1 − x2.
 Round your answers to two decimal places.)
  to  
(c)
Provide a 95% confidence interval for the difference between the two population means. (Use 
x1 − x2.
 Round your answers to two decimal places.)
  to  
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