Chapter 4.1, Problem 1E

To determine

To identify the population and the sample for the given data.

Answer to Problem 1E

Population: All the customers of the shop who uses the credit card.

Sample: 40 Envelops

Explanation of Solution

Population is a large set of data which includes each and every individual of a particular geographical region. For e.g. all the humans living in the United States etc.

While the sample is the subset of the population which the researcher extracts from the population based on certain criteria’s. For e.g., 1000 Males from who earns less than $12,000 per annum to know their living standard.

Now, according to the question,

The population of given data is all the customers who uses their credit cards.

The sample is 40 envelopes that is selected at random from each 1000 envelops.