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The following results come from two independent random samples taken of two populations. What is the point estimate of the difference between the two population means? Provide a 90% confidence interval for the difference between the two population means. Provide a 95% confidence interval for the difference between the two population means.

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Essentials Of Statistics For Busin...

9th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9780357045435

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Chapter
Section
BuyFindarrow_forward

Essentials Of Statistics For Busin...

9th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9780357045435
Chapter 10.1, Problem 1E
Textbook Problem
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The following results come from two independent random samples taken of two populations.

Chapter 10.1, Problem 1E, The following results come from two independent random samples taken of two populations. What is the

  1. What is the point estimate of the difference between the two population means?
  2. Provide a 90% confidence interval for the difference between the two population means.
  3. Provide a 95% confidence interval for the difference between the two population means.

a.

To determine

Find the point estimate of the difference between the two population means.

Explanation of Solution

Calculation:

The results from two independent random samples drawn from two populations are as follows:

Sample 1Sample 2
n1=50n2=35
x¯1=13.6x¯2=11.6
σ1=2.2σ2=3

b.

To determine

Find the 90% confidence interval for the difference between two population means.

c.

To determine

Find the 95% confidence interval for the difference between two population means.

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Chapter 10 Solutions

Essentials Of Statistics For Business & Economics
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