Chapter 1.1, Problem 1.7E

a)

To determine

To find the population and sample from given study.

Answer to Problem 1.7E

Population is all pieces and sample are 5 pieces.

Explanation of Solution

Given:

The study is, A furniture maker buys hardwood in large batches. The supplier is supposed to dry the wood before shipping (wood that is not dry won't hold its size and shape). The furniture maker chooses five pieces of wood from each batch and tests their moisture content. If any piece exceeds 12% moisture content, the entire batch is sent back.

First need to understand about sample and population.

Population: It is the set of all the possible individuals possessing the characteristic of interest in a study.

Sample: It is the subset of population on which, the actual study performed and from which, the necessary measurements are taken.

In given study,

Population: The all pieces of wood from each batch shipped.

Sample: Five pieces of wood from each batch from which furniture maker chosen.

b)

To determine

To find the population and sample from given study.

Answer to Problem 1.7E

Population is all auto insurance claims that were handled by the insurance company and sample is that claims filed that month that were selected.

Explanation of Solution

Given:

An insurance company wants to monitor the quality of its procedures for handling loss claims from its auto insurance policyholders. Each month the company selects a sample from all auto insurance claims filed that month to examine the accuracy and promptness with which they were handled.

First need to understand about sample and population.

Population: It is the set of all the possible individuals possessing the characteristic of interest in a study.

Sample: It is the subset of population on which, the actual study performed and from which, the necessary measurements are taken.

In given study,

Population: Population is all auto insurance claims that were handled by the insurance company.

Sample: The collection of auto insurance claims that claims filed that month that were selected.