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Marijuana Survey In a recent Pew poll of 1500 adults, 52%

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 8RE Chapter 1.4

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 8RE

Problem 8RE

Problem

Marijuana Survey In a recent Pew poll of 1500 adults, 52% of the respondents said that the use of marijuana should not be made legal. In the same poll, 23% of the respondents said that the use of marijuana for medical purposes should not be legal.

a. The sample of 1500 adults was selected from the population of all adults in the United States. The method used to select the sample was equivalent to placing the names of all adults in a giant bowl, mixing the names, and then drawing 1500 names. What type of sampling is this? (random, systematic, convenience, stratified, cluster)

b. If the sampling method consisted of a random selection of 30 adults from each of the 50 states, what type of sampling would this be? (random, systematic, convenience, stratified, cluster)

c. What is the level of measurement of the responses of yes, no, don’t know, and refused to respond?

d. Is the given value of 52% a statistic or a parameter? Why?

e. What would be wrong with conducting the survey by mailing a questionnaire that respondents could complete and mail back?

Step-by-Step Solution:

Answer :

Step 1 of 1 :

Given, In a recent Pew poll of 1500 adults, 52% of the respondents said that the use of marijuana should not be made legal. In the same poll, 23% of the respondents said that the use of marijuana for medical purposes should not be legal.

a)

Random Sampling : a simple random sample is a sample chosen from a population.

This is a Random sampling, because everyone in the population have the equal chance of being selected.

b)

Stratified sampling : the researcher divides the population into separate groups, called strata. Then, a probability sample (often a simple random sample ) is drawn from each group.

Strata : the total population is divided into non-overlapping subgroups.

The 50 states represent the strata, which we assume to represent opinions differently.

Therefore this is a Stratified sample.

c)

Nominal: Nominal scales are used for labeling variables, without any quantitative value.  “Nominal” scales could simply be called “labels.”

The responses are only used for identification purpose. They are not numerical, there is no way for us to rank the responses.

Therefore this is Nominal.

d) the data comes from a sample.

therefore, this is a Statistic.

e)  the sample would become voluntary. We could assume that only those with strong opinions about the subject would respond to the questionnaire, which would not be a representative sample.

Step 2 of 1

Chapter 1.4, Problem 8RE is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

Since the solution to 8RE from 1.4 chapter was answered, more than 977 students have viewed the full step-by-step answer. This full solution covers the following key subjects: adults, random, marijuana, Names, respondents. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The full step-by-step solution to problem: 8RE from chapter: 1.4 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. The answer to “Marijuana Survey In a recent Pew poll of 1500 adults, 52% of the respondents said that the use of marijuana should not be made legal. In the same poll, 23% of the respondents said that the use of marijuana for medical purposes should not be legal.a. The sample of 1500 adults was selected from the population of all adults in the United States. The method used to select the sample was equivalent to placing the names of all adults in a giant bowl, mixing the names, and then drawing 1500 names. What type of sampling is this? (random, systematic, convenience, stratified, cluster)b. If the sampling method consisted of a random selection of 30 adults from each of the 50 states, what type of sampling would this be? (random, systematic, convenience, stratified, cluster)c. What is the level of measurement of the responses of yes, no, don’t know, and refused to respond?d. Is the given value of 52% a statistic or a parameter? Why?e. What would be wrong with conducting the survey by mailing a questionnaire that respondents could complete and mail back?” is broken down into a number of easy to follow steps, and 181 words.

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