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Chapter 4: Q 4. (page 226)

Customer satisfaction A department store mails a customer satisfaction survey to people who make credit card purchases at the store. This month, 45,000

people made credit card purchases. Surveys are mailed to 1000 of these people, chosen at random, and 137 people return the survey form. Identify the

population and the sample.

Short Answer

Expert verified

The population for this survey is all 45000 people who made credit card purchases. The sample for this survey is 137 people who returned the survey forms

Step by step solution

01

Given information

A department shop performed a customer satisfaction study of those who make credit card purchases.

02

Concept

A simple random sample (SRS) of size is made up of n people chosen from the population with an equal chance of being the sample that is actually chosen.

03

Explanation

A department retailer sends a customer satisfaction survey to those who made credit card purchases. A credit card purchase was made by 45000 people in one month. 1000 of these participants were randomly chosen and sent surveys. A total of 137 participants completed the survey. This poll included all 45000 people who used their credit cards to make transactions. This study used a sample of 137 persons who completed the survey.

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