Chapter 11, Problem 16CT

Solution

To explain: The mentioned sampling method is considered to be random or not.

The sample used in the study, where a newspaper calls people selected at random from the local telephone book is not considered to be random sampling.

Given:

A newspaper calls people randomly selected from the local telephone book.

Interpretation:

The newspaper calls people at random from the telephone book may not give accurate results as people may or may not be willing to respond and even if they respond their opinion might be biased. Thus the sampling is not considered to be random.