   # A sample containing years to maturity and yield for 40 corporate bonds are contained in the data file named CorporateBonds ( Barron’s , April 2, 2012). a. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? b. Develop a 95% confidence interval for the population mean years to maturity. c. What is the sample mean yield on corporate bonds and what is the sample standard deviation? d. Develop a 95% confidence interval for the population mean yield on corporate bonds. 13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884

#### Solutions

Chapter
Section 13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884
Chapter 8.2, Problem 16E
Textbook Problem
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## A sample containing years to maturity and yield for 40 corporate bonds are contained in the data file named CorporateBonds (Barron’s, April 2, 2012). a. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? b. Develop a 95% confidence interval for the population mean years to maturity. c. What is the sample mean yield on corporate bonds and what is the sample standard deviation? d. Develop a 95% confidence interval for the population mean yield on corporate bonds.

a.

To determine

Find the sample mean and sample standard deviation for years to maturity for corporate bonds.

### Explanation of Solution

Calculation:

The given information is that the sample of 40 corporate bonds consists of years to maturity and yield.

Software Procedure:

Step-by-step procedure to obtain the sample mean and the sample standard deviation value using the MINITAB software:

• Choose Stat > Basic Statistics > Display Descriptive Statistics.
• In Variables enter the columns Variable...

b.

To determine

Find the 95% confidence interval for population mean of years to maturity.

c.

To determine

Find the sample mean and sample standard deviation for years to maturity.

d.

To determine

Find the 95% confidence interval for population mean yield of corporate bonds.

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