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Marijuana Survey Identify the type of sampling (random,

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

Problem 9RE 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 9RE

 

Marijuana Survey Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of the 1500 survey responses is obtained as described. Then determine whether the sampling scheme is likely to result in a sample that is representative of the population of all adults.

a. A complete list of all 241,472,385 adults in the United States is compiled and every 150,000th name is selected until the sample size of 1500 is reached.

b. A complete list of all 241,472,385 adults in the United States is compiled and 1500 adults are randomly selected from that list.

c. The United States is partitioned into regions with 100 adults in each region. Then 15 of those regions are randomly selected, and all 100 people in each of those regions are surveyed.

d. The United States is partitioned into 150 regions with approximately the same number of adults in each region, then 10 people are randomly selected from each of the 150 regions.

e. A survey is mailed to 10,000 randomly selected adults, and the 1500 responses are used.

Step-by-Step Solution:

Answer:

Step 1 of 5</p>

a. A complete list of all 241,472,385 adults in the United States is compiled and every 150,000th name is selected until the sample size of 1500 is reached.

This is a systematic sample because we start at a specific point and then select a subject at set intervals. This is representative of the population of adults because the entire population is included in the pool of which subjects are selected and we can assume that this sampling method is unbiased.

Step 2 of 5</p>

b. A complete list of all 241,472,385 adults in the United States is compiled and 1500 adults are randomly selected from that list.

The type of sampling used here is Random Sampling. In the survey all the members have the same probability of being included in the sample. So, the used sample is Random Sampling.

Step 3 of 5</p>

c. The United States is partitioned into regions with 100 adults in each region. Then 15 of those regions are randomly selected, and all 100 people in each of those regions are surveyed.

This is a cluster sample because all of the adults are placed into groups called clusters. Then random clusters are selected and all the people in that cluster are sampled. This is also representative of the entire adult population because we are assuming that by sampling random clusters, we will get a fairly representative sampling.

Step 4 of 5

Chapter 1.4, Problem 9RE is Solved
Step 5 of 5

Textbook: Elementary Statistics
Edition: 12th
Author: Mario F. Triola
ISBN: 9780321836960

Elementary Statistics was written by Sieva Kozinsky and is associated to the ISBN: 9780321836960. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12th. The answer to “Marijuana Survey Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of the 1500 survey responses is obtained as described. Then determine whether the sampling scheme is likely to result in a sample that is representative of the population of all adults.a. A complete list of all 241,472,385 adults in the United States is compiled and every 150,000th name is selected until the sample size of 1500 is reached.b. A complete list of all 241,472,385 adults in the United States is compiled and 1500 adults are randomly selected from that list.c. The United States is partitioned into regions with 100 adults in each region. Then 15 of those regions are randomly selected, and all 100 people in each of those regions are surveyed.d. The United States is partitioned into 150 regions with approximately the same number of adults in each region, then 10 people are randomly selected from each of the 150 regions.e. A survey is mailed to 10,000 randomly selected adults, and the 1500 responses are used.” is broken down into a number of easy to follow steps, and 173 words. Since the solution to 9RE from 1.4 chapter was answered, more than 350 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 9RE from chapter: 1.4 was answered by Sieva Kozinsky, our top Statistics solution expert on 03/15/17, 10:30PM. This full solution covers the following key subjects: adults, regions, selected, United, Randomly. This expansive textbook survival guide covers 121 chapters, and 3629 solutions.

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