Determine the sampling method described in each of these studies.stratified samplesimple random samplecluster sampleconvenience samplesystematic sample:: A researcher surveys the political preference of the first 10 people who enter the room.:: A teacher divides a class into boys and girls and asks a few students in each group what activities they would like to do during recess.:: A random group of workers in each of five random office towers downtown are asked their opinions about city development.:: An usher asks every fifth person in line their drink preference to prepare the kitchen.:: A computer selects 100 random phone numbers from a contact list to dial for a consumer research survey.: A company sends a survey to every employee and expects a 100% return rate.I I|||

Given some studies and we have to describe the sampling method used in these studies.

Answered: Determine the sampling method described…

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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. A large suburban school wants to assess student attitudes towards their mathematics textbook. The administration randomly selects 15 mathematics classes and gives the survey to every student in the class. This is an example of a (A) multistage sample (B) stratified sample cluster sample simple random sample (E) convenience sample C.
Middle Class Well-to-do Total Investigation Poor 160 30 10 200 A 120 40 300 B 140 300 150 50 500 Total Show the the sampling technique of at least one of the investigators is suspected.
Plzz explain both question. Ty
St. John Hospital has five wards: A, B, C, D, and E. The numbers of patients in the wards are listed in the Table 7 below. The statistician of the hospital would like to conduct a sample survey about its patients' opinions towards the services of the hospital. A sample of size 200 will be selected randomly. Ward A B C D E Table 7 Number of Patients 155 205 310 680 67 (a) Which sampling method is the most appropriate in selecting a random sample for the above survey? Explain your answer briefly. (b) Using the selected sampling method in part (a), compute the respective sample sizes for the 5 wards. Check if the required sample size of 200 can be met.
20 computer screens were randomly selected from a large collection of computer screens in a company’s warehouse. These 20 computer screens are referred to as the: test statistic. parameter. population. sample.
Identify the sampling techniques used in each scenario. c. In order to choose the winners of free tickets to the campus concert, student housing printed out all 60 pages of student ID and then chose three of the pages randomly.
A child has an enormous jar in which she has been saving all of her spare change. In order to determine exactly how much money she has in the jar, she dumps all of the coins on the floor and counts them. Under the watchful eye of her mother, she counts 180 pennies, 120 nickels, 100 dimes, and 80 quarters. The data collection method used in this example is called Select one: a. none of these b. random sampling. C. a controlled study. d. e. a census. a survey.
Race organizers want to survey the participating runners on the quality of the running course. Which of the following uses systematic random sampling? Select the first 15 finishers and the last 15 finishers to take the survey. Randomly select 15% of the male participants and 15% of the female participants. Select the 5th finisher (with the number 5 being randomly chosen) to survey, then survey every 15th finisher after that. Sort all of the runners' names alphabetically, then randomly choose 2 letters and survey all participants whose last name begins with one of those letters.
Please check picture and answer with detail explaination.
Suppose you recruit the next 100 people who visit the DCC cafeteria to participate in a survey. One of the questions you ask is whether the student eats on campus (i.e., in the cafeteria) regularly, and you want to use the sample proportion to estimate the value of the (population) proportion of all DCC students who eat on campus regularly. Do you think this sampling method is likely to be biased? If so, in which direction? This sampling method is not likely to be biased and will produce a representative sample of DCC students. This sampling method is biased and is likely to yield an overestimate for the population proportion. This sampling method is biased and is likely to yield an underestimate for the population proportion.
Determine which Sample Type is used in the following scenarios. President Biden want to survey the nation about their incomes. He contacts the IRS and has them put everyone who filed taxes last year into a data base. He then groups tax filers based on their filing status, Single, Married filing separate, and married filing jointly. He then selects 5000 people from each group using a random generator to survey.
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

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