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Chapter 12: Q. AP4.23 (page 831)

Which sampling method was used in each of the following settings, in order from I to IV?

I. A student chooses to survey the first 20 students to arrive at school.

II. The name of each student in a school is written on a card, the cards are well mixed, and 10 names are drawn.

III. A state agency randomly selects 50 people from each of the state鈥檚 senatorial districts.

IV. A city council randomly selects eight city blocks and then surveys all the voting-age residents on those blocks.

a. Voluntary response, SRS, stratified, cluster

b. Convenience, SRS, stratified, cluster

c. Convenience, cluster, SRS, stratified

d. Convenience, SRS, cluster, stratified

e. Cluster, SRS, stratified, convenience

Short Answer

Expert verified

The correct answer is option (b) Convenience, SRS, stratified, cluster.

Step by step solution

01

Concept introduction

In quantitative tests, segmentation is the technique of selecting a predefined dataset from a huge population. Vary based on the type of assessment being undertaken, the measures taken to recruit from a general community may include simple chance picking or multi - stage sampling.

02

Explanation

In each of the following settings, from I to IV, we need to know which sampling method was utilised.

Because the first twenty students are conveniently chosen, the convenience sample or voluntary response sample is employed in I statement. Because every individual has an equal probability of being chosen, a simple random sample is utilised in the second assertion.

Because the states are the independent subgroups, stratified random sampling is used in the Ill statement.

Cluster sampling is employed in the IV statement because the subgroups are city blocks. As a result, option (b) is the proper option based on the order of sampling methods employed in the statements.

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Most popular questions from this chapter

Multiple Choice Select the best answer for Exercises 23-28. Exercises 23-28 refer to the following setting. To see if students with longer feet tend to be taller, a random sample of 25students was selected from a large high school. For each student, x=footlength&y=heightere recorded. We checked that the conditions for inference about the slope of the population regression line are met. Here is a portion of the computer output from a least-squares regression analysis using these data:

26. Which of the following is the best interpretation of the value 0.4117in the computer output?

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Click-through rates Companies work hard to have their website listed at the top of an Internet search. Is there a relationship between a website鈥檚 position in the results of an Internet search (1=top position,2=2nd position, etc.) and the percentage of people who click on the link for the website? Here are click-through rates for the top 10 positions in searches on a mobile device:

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T12.3 Inference about the slope 尾1 of a least-squares regression line is based on which of
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Nicole and Elena wanted to know if listening to music at a louder volume negatively impacts test performance. To investigate, they recruited 30volunteers and randomly assigned 10volunteers to listen to music at 30decibels, 10volunteers to listen to music at 60decibels, and 10volunteers to listen to music at 90decibels. While listening to the music, each student took a 10-question math test. Here is computer output from a least-squares regression analysis using role="math" localid="1654167255833" x=volumeand y=numbercorrect:

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Is there convincing evidence that listening to music at a louder volume hurts test performance? Assume the conditions for inference are met.
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