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Chapter 1: Q. 15 (page 49)

For the following four exercises, determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).

A computer generates 100 random numbers, and 100 people whose names correspond with the numbers on the list are chosen.

Short Answer

Expert verified

For the given case simple random sampling is used.

Step by step solution

01

Introduction

Sampling is essentially the method involved with finding out about the populace in light of the example drawn from the number of inhabitants in interest. There are different strategies for choosing this example

02

Explanation

Simple random sampling testing is the one wherein every single unit of the populace has an equivalent possibility of being remembered for the example. The scientist haphazardly chooses the example utilizing different procedures like irregular number table, lottery strategy and so on.

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Most popular questions from this chapter

Use the following data to answer the next five exercises: A pair of studies was performed to measure the effectiveness of a new software program designed to help stroke patients regain their problem-solving skills. Patients were asked to use the software program twice a day, once in the morning and once in the evening. The studies observed 200stroke patients recovering over a period of several weeks. The first study collected the data in Table 1.31. The second study collected the data in Table 1.32.

Patients who used the software were also a part of an exercise program whereas patients who did not use the software were not. Does this change the validity of the conclusions from Exercise 1.31?

A cardiologist is interested in the mean recovery period of her patients who have had heart attacks.

1.13A local radio station has a fan base of 20,000listeners. The station wants to know if its audience would prefer

More music or more talk shows. Asking all 20,000listeners is an almost impossible task.

The station uses convenience sampling and surveys the first 200people they meet at one of the station鈥檚 music concert events. 24people said they鈥檇 prefer more talk shows, and 176 people said they鈥檇 prefer more music.

Do you think that this sample is representative of (or is characteristic of) the entire 20,000listener population?

The data are the colors of houses. You sample five houses. The colors of the houses are white, yellow, white, red, and white. What type of data is this?

Is a sample of 500 volunteers a reliable measure for a population of 2,500?
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