Chapter 8, Problem 8.17CYS

To determine

To find: The population described in the problem.

Answer to Problem 8.17CYS

Option (a): All the customers who have purchased something in the last year.

Explanation of Solution

Reason for the correct answer:

A survey was conducted by an online store about the customers who have purchased in the last year. Out of 1,000 customers 696 have said that they are very satisfied with the stores’ website.

In the survey all the customers who have purchased last year are included in the study for making inference that represents the population.

Reason for the incorrect answers:

Option (b): The 1,000 customers whom the online store contacted do not represent the population as the population should not include only 1,000 customers, it should involve all the customers.

Option (c): The 696 customers who were satisfied represent the sample because these customers are forming the subset of the population of all the customers.

Conclusion:

Thus, all the customers who have purchased something in the last year represent the population in this survey.

Statistics Concept Introduction

Introduction:

Population:

Population consists of the complete subjects that are included in the study for making inferences.

Sample:

Sample is the subset of the subjects chosen from the whole population.