Chapter 5.3, Problem 5.56E

(a)

To determine

To find out the sources is of sampling error or non-sampling error and explain it.

Answer to Problem 5.56E

Sampling error.

Explanation of Solution

The subject line about the past drug;

This is a sampling error because this is an error committed in taking the survey itself.

(b)

To determine

To find out the sources is of sampling error or non-sampling error and explain it.

Answer to Problem 5.56E

Non-sampling error.

Explanation of Solution

A typing error is made in recording the data;\

This is a non-sampling error because this is an error committed in collecting the data from the survey.

(c)

To determine

To find out the sources is of sampling error or non-sampling error and explain it.

Answer to Problem 5.56E

Sampling error.

Explanation of Solution

Data are gathered by asking people to mail in a coupon printed in a newspaper;

This is a sampling error because nonresponse is an error committed in the process of taking the survey.