A newspaper had the following headline. "People Against New Breed-SpecificDog Ban" The reporter who wrote the story tells you he visited a leash free parkand talked to 100 dog owners.His question:A mew by-law bans owning aPit Bull, StafforAshire Terrier,or Bull Terrier dog breed, or anyhybrid or similar cvessbreed.Do you support the by-law?a. Why are the survey results invalid?b. What changes would you make to improve the survey?ParagraphBIU

Population: A population is the collection of all possible events for an experiment. Sample: A…

A newspaper had the following headline. "People Against New Breed-Specific Dog Ban" The reporter who wrote the story tells you he visited a leash free park and talked to 100 dog owners. His question: A new by-law bans owning a Pit Bull, Staffordshire Terviev, or Bull Terriev dog breed, or any hybrid or similar cressbreed. De you support the by-law? a. Why are the survey results invalid? b. What changes would you make to improve the survey?

A newspaper had the following headline. "People Against New Breed-Specific Dog Ban" The reporter who wrote the story tells you he visited a leash free park and talked to 100 dog owners. His question: A new by-law bans owning a Pit Bull, Staffordshire Terviev, or Bull Terriev dog breed, or any hybrid or similar cressbreed. De you support the by-law? a. Why are the survey results invalid? b. What changes would you make to improve the survey?

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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5. Critical Thinking ProblemIn a Wakefield Research Survey, respondents were asked if they were hesitated to give ahandshake because of a fear of germs. Of the respondents, 411 answered “yes” and 592said “no”. We want to test the claim that ? < 0.5, where p denotes the proportion of“yes” respondents for the population. Use ? = 0.05.a. What is the sample proportion of yes respondents, and what notation is used torepresent it?b. What is the P-value? Write your answer using ordinary notation.c. What does the P-value suggest about the claim?
1 The Blue Tide High School Student Committee has 5 members. They would like to conduct a survey to get the students’ opinion on the school’s new bell schedule. They asked 23 students’ representatives to distribute a questionnaire to the schools’ 1550 students. In the end, they received 750 responses. They wrote a report based on the information provided by the respondents. 2) which number represents the size of the sample?
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
List the elements of the sample space for the experiment. A state is selected from the states in the U.S. whose name begins with the letter A. O {(Alaska, Arizona), (Arkansas, Alabama)} O {Alaska, Alabama, Arizona, Arkansas} O {Alaska, Alabama}, {Arizona, Arkansas} {Alaska}, {Arkansas}, {Arizona}, {Arkansas} O {Arkansas, Alaska, Arizona}, {Alabama}
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?
4. The numbers of incorrect answers on a true-false test for 15 students were recorded as follows: 2, 1, 3, 0, 1, 3, 6, 0, 3, 3, 5, 2, 1, 4, 2. Find the median and the mode.
List the elements of the sample space for the experiment. A state is selected from the states in the U.S. whose name begins with th letter A. {(Alaska, Arizona), (Arkansas, Alabama)} (Alaska, Alabama, Arizona, Arkansas} {Alaska, Alabama}, {Arizona, Arkansas} {Alaska}, (Arkansas}, {Arizona}, {Arkansas} {Arkansas, Alaska, Arizona}, {Alabama}
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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?
1, a person is doing research on how many coffees a person has in one day. he/she decides to ask people questions as they enter the coffee shop. a) what type of survey is this? explain. b) does this survey contain any bias? explain
1. The United States Environmental Protection Agency6 reports that in 2006, each American generated 4.6 pounds of solid waste a day. (a) Does this mean every single American pro duces the same amount of garbage? What do you think this statement means? (b) Was the number 4.6 obtained from a sam ple? Explain. (c) How would you select a sample?