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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 8.2, Problem 18E

Textbook Problem

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Older people often have a hard time finding work. AARP reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job contained in the file JobSearch are consistent with the AARP findings.

- a. Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job.
- b. At 95% confidence, what is the margin of error?
- c. What is the 95% confidence interval estimate of the mean?
- d. Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study?

**a.**

To determine

Find the point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job.

**Calculation:**

The given data shows that the number of weeks spent searching for a job.

The sample mean

**Software Procedure:**

Step-by-step procedure to obtain the mean value using the MINITAB software:

- Choose
**Stat > Basic Statistics > Display Descriptive Statistics**. - In
**Variables**enter the columns**Job Search Time (Weeks)**

**b.**

To determine

Find the margin of error.

**c.**

To determine

Find the 95% confidence interval for population mean.

**d.**

To determine

Discuss the degree of skewness found in the sample data.

STATISTICS F/BUSINESS+ECONOMICS-TEXT

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