When designed experiments are conducted in a public school systems,researchers typically choose a particular district and randomly select classes(for example, fourth grade classes in that district). The experiment is thenconducted using all the students in the selected classes. Which type ofsampling scheme is implemented?O A simple random sample (SRS)O A voluntary response sampleO A systematic random sampleO A stratified random sampleO A cluster sample

Solution: There are two types of sampling probability sampling and non probability sampling. The…

Answered: When designed experiments are conducted…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The state would like to evaluate the usefulness of a program to randomly test high school athletes for steroid use. Initially, a state agency will test athletes in all 20 schools in Fort Worth, randomly selecting 3 athletes from each school. What type of sampling is being employed in this example? convenience sampling cluster sampling simple random sampling stratified sampling
A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 102 students (N = 102). He selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire. Is this sample design an example of random sampling? Explain. Assuming that all students attend his class that day, how many students will the instructor select to complete his questionnaire?
A coach is interested in how many slam dunks the average college freshman at his university can do. Ten volunteers from the senior class step forward. After observing their performance, the coach concluded that college seniors can do an average of 10 slam dunks in a row without missing. what is the sample? what is the population?
This is part of a practice test, want to see if I am doing it right
Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 337 subjects, each was asked about the importance of the appearance of a job applicant. The survey subjects were human resource professionals who randomly selected by pollsters from a reputable market research firm. It is flawed because it is from a small sample. It appears to be sound because it is a census. It is flawed because it is a voluntary response sample. It appears to be sound because the data are not biased in any way.
A community college employs 8787 full-time faculty members. To gain the faculty's opinions about an upcoming building project, the college president wishes to obtain a simple random sample that will consist of 99 faculty members. He numbers the faculty from 1 to 8787. Complete parts (a) and (b) below. LOADING... Click the icon to view the random number table. Question content area bottom Part 1 (a) Using the provided random number table, the president closes his eyes and drops his ink pen on the table. It points to the digit in row 3, column 6. Using this position as the starting point and proceeding downward, determine the numbers for the 99 faculty members who will be included in the sample. The numbers for the faculty members are enter your response here.
Part 1: Sampling Methods Identify the sampling method in the following scenarios. Based on the sampling method, is the research likely to have high or low external validity? High or Low External Validity Sampling Scenario Method Researchers at PCC are interested in knowing about academic success of PCC students. They compile a list of all students' emails and use a random number generator to select a sample of 4000 students to survey.
Match the sampling scheme to an example of that type of sampling. Group of answer choices Simple Random Sample (SRS), without replacement Simple Random Sample (SRS), with replacement Stratified Cluster Systematic Voluntary Response Judgment AC Randomly selecting a group or small…
Which one of the sampling methods listed in the response options is used in the scenario below? A university researcher is interested in studying newly admitted community college transfer students. She begins by dividing the students into two subpopulations: US citizens and international students. The researcher then randomly samples from each separate subpopulation to ensure that the final combined sample represents the same percentage of US citizens and international students seen in the general community college transfer population. A. Cluster B. Convenience C. Stratified D. Systematic
Part 1: Sampling Methods Identify the sampling method in the following scenarios. Based on the sampling method, is the research likely to have high or low external validity? High or Low External Validity Scenario Sampling Method Researchers want to survey K-12 students about their socialization skills during the COVID pandemic. Researchers start by recruiting a small sample of 20 students, and then ask each of these 20 students to refer the researchers to 5 more potential participants. Researchers keep asking new participants to refer them to 5 more people
A marketing expert for a particular chain of restaurants is planning a survey in which 510 people will be randomly selected from each age group: 10-19, 20-29, and so on. What type of sampling is used? Convenience sampling Simple random sampling Systematic sampling Stratified sampling Cluster sampling Is the procedure likely to yield a representative sample or a biased sample? Explain why. A. The procedure is likely to yield a representative sample because it covers every age group. B. The procedure is likely to be biased because people from those age groups are not evenly distributed throughout the population. C. The procedure is likely to yield a biased sample because younger people don't know what they want and should be studied separately. D. The procedure is likely to be representative because 510 people from each age group form a large sample size.

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