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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A sample of Reese's pieces contains the following: 23 Orange, 14 Brown, 18 Yellow. What is the proportion of orange? Round to two places
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?
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?
Northside High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following. (a) Which of the following surveys probably would best represent the entire population of seniors? 20 seniors are randomly selected; 17 plan to go to a 4-year college. 20 Chess Club members are randomly selected; 14 plan to go to a 4-year college. O 20 honor roll students are randomly selected from the senior class; 18 plan to go to a 4-year college. (b) There are 500 seniors at Northside High. Using your answer from part (a), estimate the number of seniors who plan to go to a 4-year college. ☐ seniors
Part b should be a sample size of 29%, not 25%
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?
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.)
An article a Florida newspaper reported on the topics that teenagers most want to discuss with their parents. The findings, the results of a poll, showed that 46% would like more discussion about the family's financial situation, 37% would like to talk about school, and 30% would like totalk about religion. These and other percentages were based on a national sampling of 546 teenagers. Estimate the proportion of all teenagers who want more family discussions about the school. Use a 95% confidence level. Express the answer in the form p ± E and round to the nearest thousandth.
A group project ivestigated the number of hours of TV viewed by students ona caollege campus. Two hundred students were surveyed via questionnaires. Identify the population?

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