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Chapter 7: Q.4 (page 428)

For Exercises 1 to 4, identify the population, the parameter, the sample, and the statistic in each setting.

Gas prices How much do gasoline prices vary in a large city? To find out, a reporter records the price per gallon of regular unleaded gasoline at a random sample of 10gas stations in the city on the same day. The range (maximum-minimum) of the prices in the sample is 25cents

Short Answer

Expert verified

All stations of gasoline are the population.

10selected gas stations are the sample.

A topic that is being investigated is the parameter.

Range of the price which is 25 cents is the statistic.

Step by step solution

01

Given Information

What amount do gas costs differ in a for each gallon of customary unleaded fuel at an irregular example of 10corner stores in the city around the same time. The range (most extreme - least) of the costs in the example is 25pennies.

02

Explanation

The individuals that are studied are considered as the population. Here, all stations of gasoline are the population.

A sample is the subpart of the population that is studied to get the details about the population. Here, 10selected gas stations are the sample.

The parameter is the measure of the original population. Here, a topic that is being investigated is the parameter.

Statistic is the measure of the sample. Here, range of the price which is 25cents is the statistic.

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