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9th Edition

David R. Anderson + 4 others

Publisher: South-Western College Pub

ISBN: 9780357045435

Chapter 10.2, Problem 9E

Textbook Problem

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The following results are for independent random samples taken from two populations.

- a. What is the point estimate of the difference between the two population means?
- b. What is the degrees of freedom for the
*t*distribution? - c. At 95% confidence, what is the margin of error?
- d. What is the 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.

**Calculation:**

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

Sample 1 | Sample 2 |

**b.**

To determine

Find the degrees of freedom for the *t* distribution.

**c.**

To determine

Find the margin of error at 95% confidence.

**d.**

To determine

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

Essentials Of Statistics For Business & Economics

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