QUESTION 8A reporter for the local news station in Angel Grove, CA wants to know how widespread knowledgeabout the Power Rangers has become. They post a poll on their website and asks their audienceto indicate whether they've met the Power Rangers in person, have not met but have heard of thePower Rangers, or have not heard of the Power Rangers before this. What type of bias is moststrongly present in this survey?O Voluntary Response BiasO Self-interest StudyO Perceived Lack of AnonymityO There is no bias in this studyO Response Bias

In the given case, option 3 is incorrect because we can safely assume that there is no threat to…

Answered: QUESTION 8 A reporter for the local…

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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determine whether there is a potential for bias and explain why? A poster for the U.S.Deparment of Labor surveys 1500 randomly selected adults about their employment status.
Many polls are conducted over the telephone. Some polling organizations choose a sample of phone numbers to call from lists that include landline phone numbers only, and do not include cell phones. Do you think this increases the bias in phone polls? [ Select ] [ Select ] No Yes
Which of the following are sources of sampling error and which are sources of nonsampling error? The subject cannot be contacted in five calls. The telephone directory is used as a sampling frame. Data are gathered by asking people to go to a website and answer questions online. A typing error is made in recording the data. The subject lies about past illegal drug use. Interviewers choose people on the street to interview.
We wish to determine whether there is a relationship between the gender of ateenager and their preferred brand of running shoes. A survey of 200teenagers produced the following results: Preferred BrandGender,Nike, Asics ,New Balance and TotalFemale nike24 ascis19 new balance59 total102 Male nike32 asics28 new balance38 total98 Total nike56 asics47 new balance97 total200 Perform an appropriate test at a 5% level of significance to determine whetherthere is a relationship between the gender of teenagers and the preferredbrand of running shoes.
Gallup At its website (www.gallup.com) the Gallup Pollpublishes results of a new survey each day. Scroll downto the end, and you’ll find a statement that includes wordssuch as these: Results are based on telephone interviews with 1,008 na-tional adults, aged 18 and older, conducted January 3–5, 2013. . . . In addition to sampling error, question word-ing and practical difficulties in conducting surveys can introduce error or bias into the findings of public opinionpolls.a) For this survey, identify the population of interest. b) Gallup performs its surveys by phoning numbers gen-erated at random by a computer program. What is the sampling frame?c) What problems, if any, would you be concerned aboutin matching the sampling frame with the population?
A J.D. Power and Associates vehicle quality survey asked new owners a variety of questions about their recently purchased automobile. One question asked for the owner's rating of the vehicle using categorical responses of average, outstanding, and exceptional. Another question asked for the owner's education level with the categorical responses some high school, high school graduate, some college, and college graduate. Assume the sample data below are for 500 owners who had recently purchased an automobile. Education Quality Rating Some HS HS Grad Some College College Grad Average 30 30 20 60 Outstanding 50 50 50 90 Exceptional 20 20 30 50 a. Use a 0.05 level of significance and a test of independence to determine if a new owner's vehicle quality rating is independent of the owner's education. Compute the value of the x test statistic (to 2 decimals). Use Table 3 of Appendix B to find the p-value. The p-value is - Select your answer - What is your conclusion? - Select your answer - v…
Identify the type of sample ( Experimental or Observational) Then tell if the sample is biased 4. A group of students in a high school do a study about teacher attitudes. They interview teachers at the school.
Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people who have only cell phones differ from those of people who have landline service, the poll results may not represent the entire adult population. The Pew Research Center interviewed separate random samples of cell-only and landline telephone users who were less than 30 years old. Here’s what the Pew survey found about how these people describe their political party affiliation. Do we reject, or fail to reject, the null hypothesis?
You are interested in the percentage of people in your city who favor tax cuts. You interview every twentieth person as they leave the church in your neighborhood. Determine what type of bias the study involves.
Sierra College students enrolled in an online Elementary Statistics course were asked to participate in an anonymous onlne survey. The survey asked the students "Which type of device will you primarily use to access your online course in Canvas?". Of the 152 students who answered this question, 20 responded "a desktop computer", 121 responded "a laptop computer", 6 responded "a smartphone", and 5 responded "a tablet". The Sierra College Mathematics Department believes that less than 5% of students enrolled in an online Elementary Statistics course primarily uses a smartphone to access their online course in Canvas. Use the data collected in the survey to conduct a hypothesis testing procedure to test this belief. What conclusion should be reached according to the results of this hypothesis test?
A study was conducted to determine how people get jobs. The table list date from 400 randomly selected subjects. The data are bases on results from the National centter for Career Strategies. Job source of survey respondent FREQUENCIES HELP-WANTED ads 56 EXECUTIVE SEARCH FIRMS 44 NETWORKING 280 MASS MAILING 20 TOTAL 1. What percentage of the respondents got job by either help-wanted ads or mass mailing? 2. What percentage of the respondent got jobs from networking?

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