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Chapter 4: Q 112. (page 270)

Surveys of youth A survey asked teenagers whether they had ever consumed an alcoholic beverage. Those who said “Yes” were then asked, “How old were you when you first consumed an alcoholic beverage?” Should the consent of parents be required to ask minors about alcohol, drugs, and other such issues, or is the consent of the minors themselves enough? Give reasons for your opinion.

Short Answer

Expert verified

The consent of the parents is required to ask minor about alcohol, drugs and other such issues.

Step by step solution

01

Given information

it is given that a survey asked the teenagers whether they had ever consumed alcoholic beverages or not.

02

Concept

Individuals are purposely subjected to a treatment in order to measure their responses in an experiment.

03

Explanation

According to the question, a poll asked teens whether they had ever consumed alcoholic beverages. In this scenario, the parents' approval is required to ask the minor about alcohol, drugs, and other similar issues because the children may disclose confidential family information during these responses, and underage alcohol/drug usage is unlawful, which the youngster may or may not be aware of.

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Most popular questions from this chapter

Technology for teaching statistics The Brigham Young University (BYU) statistics department is performing experiments to compare teaching methods. Response variables include students’ final-exam scores and a measure of their attitude toward statistics. One study compares two levels of technology for large

lectures: standard (overhead projectors and chalk) and multimedia. There are eight lecture sections of a basic statistics course at BYU, each with about 200students. There are four instructors, each of whom teaches two sections. Suppose the sections and lecturers are as follows:

(a) Suppose we randomly assign two lecturers to use standard technology in their sections and the other two lecturers to use multimedia technology. Explain how this could lead to confounding.

(b) Describe a better design for this experiment.

Online polls In June 2008, Parade magazine posed the following question: “Should drivers be banned from using all cell phones?” Readers were encouraged to vote online at parade.com. The July13,2008 issue of Parade reported the results: 2407(85%) said “Yes” and 410(15%) said “No.”

(a) What type of sample did the Parade survey obtain?

(b) Explain why this sampling method is biased. Is 85% probably higher or lower than the true percent of all adults who believe that cell phone use while

driving should be banned? Why?

When we take a census, we attempt to collect data from

(a) a stratified random sample.

(b) every individual selected in an SRS.

(c) every individual in the population.

(d) a voluntary response sample.

(e) a convenience sample.

The Web portal AOL places opinion poll questions next to many of its news stories. Simply click your response to join the sample. One of the questions

in January 2008 was “Do you plan to diet this year?” More than 30,000 people responded, with 68% saying “Yes.” You can conclude that

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(b) the poll used a convenience sample, so the results tell us little about the population of all adults.

(c) the poll uses voluntary response, so the results tell us little about the population of all adults.

(d) the sample is too small to draw any conclusion.

(e) None of these.

An example of a non-sampling error that can reduce the accuracy of a sample survey is

(a) using voluntary response to choose the sample.

(b) using the telephone directory as the sampling frame.

(c) interviewing people at shopping malls to obtain a sample.

(d) variation due to chance in choosing a sample at random.

(e) inability to contact many members of the sample.
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