For each of the following problems, please identify the population, the parameter of interest, thesample, and the sampling method. Then describe at least one source of bias (give its name) andexplain how you might change this sample to remove that bias.A bank seeks to look at in what ways their customers participate in the stock market. Theythink this will differ based on age, so they put all of their customers into three groups (18 – 35,36 – 55, and 56 or older) and then sample within eachthe bank sends a text to the phone number of each individual, asking to complete a survey.group.Тоgetthe necessaryinformation,

Population A collection of persons, things or objects involved in the study is population. Sample…

Answered: A bank seeks to look at in what ways…

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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In provincial-level monitoring in farms, will you do random sampling, representative sampling, etc. How many samples do you think will be enough for each level. What criteria will you use for selection. How will you conduct the sampling and monitoring.
A researcher divided subjects into two groups according to gender and then selected a fixed proportion of members from each group for his sample. What sampling method was the researcher using? A. Stratified sample. B. Simple random sample. C. Voluntary response sample. D. Cluster sample.
sixty-five percent of those surveyed reply No to a certain question. If 234 reply No, what is the sample size?
Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster. A television station asks its viewers to call in their opinion regarding the variety of sports programming. Which type of sampling is used? O A. Stratified B. Random OC. Convenience O D. Cluster O E. Systematic
Online Medical Info USA Today posted this question on its website: “How often do you seek medical information online?” Of 1072 Internet users who chose to respond, 38% of them responded with “frequently.” What term is used to describe this type of survey in which the people surveyed consist of those who decided to respond? What is wrong with this type of sampling method?
Sony wants to administer a satisfaction survey to its current customers. Using their customer database, the company randomly selects 90 customers and asks them about their level of satisfaction with the company. What type of sampling is used? O A. Systematic O B. Stratified O C. Convenience O D. Simple random O E. Cluster
A political campaign wants to estimate the number of adult residents who voted in the last city election. Answer the following. (a) Which of the following surveys probably would best represent the entire adult population of the city? 50 senior residents are randomly selected; 42 voted in the last election. 50 adult residents are randomly selected from the city; 25 voted in the last election. 50 business owners are randomly selected; 38 voted in the last election. (b) There are 16,800 adults who live in the city. Using your answer from part (a), estimate the number of adults who voted in the last city election. adults
If you were conducting a survey to find out how many of your fellow students approved of the state providing free community college tuition, what method of sampling would you use and why?
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.
In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 440 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 418 indicated that they were total abstainers. Complete parts (a) and (b) below. (a) Determine the sample proportion for each sample. and respectively. The proportions of the adults who took the 1942 survey and the recent survey who were total abstainers are (Round to three decimal places as needed.)
At your favorite website, a poll asks you a series of questions about the current state of the world. The sampling technique being employed is:
Identify the sampling techniques used in each scenario. a candidate for the local school board surveyed parents picking up their children from the public school on three school days in the last month.

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