ou may need to use the appropriate appendix table or technology to answer this question. he following results are for independent random samples taken from two populations. Sample 1 1 = 20 X₁ = 22.9 $1 = 2.1 Sample 2 "2 = 30 x₂² = 20.1 $₂ = 4.4 a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂.) b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) to d) What is the 95% confidence interval for the difference between the two population means? (Use x₁ - x₂. Round your answers to one decimal place.)
ou may need to use the appropriate appendix table or technology to answer this question. he following results are for independent random samples taken from two populations. Sample 1 1 = 20 X₁ = 22.9 $1 = 2.1 Sample 2 "2 = 30 x₂² = 20.1 $₂ = 4.4 a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂.) b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) to d) What is the 95% confidence interval for the difference between the two population means? (Use x₁ - x₂. Round your answers to one decimal place.)
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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Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question.
The following results are for independent random samples taken from two populations.
Sample 1
n1 = 20
Sample 2
72 = 30
x₂ = 20.1
$1 = 2.1
$2 = 4.4
(a) What is the point estimate of the difference between the two population means? (Use X₁ − ×₂.)
= 22.9
(b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.)
(c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.)
(d) What is the 95% confidence interval for the difference between the two population means? (Use
X₁ - X₂. Round your answers to one decimal place.)
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