Roper Through their Roper Reports Worldwide, GfK Roper conducts a global consumer survey to help mul-tinational companies understand different consumer attitudes throughout the world. Within 30 countries, theresearchers interview 1000 people aged 13–65. Theirsamples are designed so that they get 500 males and500 females in each country. (www.gfkamerica.com)a) Are they using a simple random sample? Explain.b) What kind of design do you think they are using?

Q: Which type of sampling method is used in the following? 20 people from each dorm are asked to fill…

A: In simple random sampling, the samples are chosen at random from the whole population. In cluster…

Q: There are 18 athletic teams at MVCC.  To determine what programs athletes are majoring in, a…

A: Sample is a group of objects which are taken from a large population. There are various methods by…

Q: A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following…

A: As per our Guidelines we are suppose to do only one question

Q: entering your work cafeteria and are approached by an individual to participate in their study by…

A: Given that  You are entering your work cafeteria and are approached by an individual to participate…

Q: A political scientist surveys 74 of the current 205 representatives in a state's congress. Of them,…

A: A Population is the entire group that you want to draw conclusions about. A sample is the specific…

Q: isn't the sample size should be 35, not 12?

A: We have given that the information presented by the tutorial school related to the IELTS  mock…

Q: Your research methods class has been given an assignment to measure the student body of your…

A: In sampling, a subset is selected from a population for analysis and research. In some cases, the…

Q: A graduate student wants to know which campus dining option undergraduate students prefer across the…

A: Here, the graduate student randomly selected 10 students from each residence hall across the…

Q: please answer in text form and in proper format answer with must explanation , calculation for each…

A: Step 1: Determine the statistical test to be used.In this case, Diana used matched pairs t-test or…

Q: In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a…

A: A population is a collection of all possible observations, whereas a census tries to gather whole…

Q: Online gamers are divided into different age groups. A random sample from each group is selected and…

A: From the given information we want to know method of sampling.

Q: To conduct a door-to-door survey about crime victimization, a city official randomly selects 5 city…

A: To find: What type of sample is this ?

Q: spinner can and on either red or blue.

A: There are two possible outcomes. Red and blue.

Q: After a Sampling Plan is developed- what are the steps in sampling?

A: Sampling: In statistical analysis, the sampling is defined as selection of subjects from the…

Q: Prof. Badalian wants to know the ages of moviegoers who go to see Star Wars. If he survey everyone,…

A: Systematic sampling can be defined as selecting the sample from  the large population according to…

Q: A learning lab has commissioned you to administer a survey of people with dyslexia. You will use…

A: Given problem Given that

Q: A statistics lecturer wanted to determine if the time spent studying affected a student's GPA She…

A: Correct Answer: b. Simple Random SamplingReason: The lecturer collected data from 300 randomly…

Q: A political scientist surveys 70 of the current 127 representatives in a state's congress. Of them,…

A: Given that a political scientist 70 of the current 127 representative in state's congrese.  And of…

Q: When the bureau of labor statistics conducts a survey, it begins by partitioning the US adult…

A: A simple random sample is a subset of population in which each unit in the sample has an equal…

Q: Explain the EFFECT OF SAMPLE SIZE.

A: The size of our sample defines how much information we have and thus, in part, decides our precision…

Q: how do you find the simple random sample of 15 restaurants?

A: In simple random sampling each member of the population has an equal chance of being included in the…

Q: Identify the sampling techniques​ used, and discuss potential sources of bias​ (if any). Explain.…

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Q: If we took three different samples of college students (one from California, one from Arizona, and…

A: The samples are derived of 500 students from three cities, city C, city AR and city AL.

Q: pple recently released a new version of its iPhone 13 Max and wants to solicit feedback on the…

A: Voluntary Response Sample: This represents the sample who choose to volunteer for the response. Here…

Q: A test of the effectiveness of a new curriculum could begin by dividing an area by school district,…

A: Here we have given the sampling scheme, We have to identify which of the random sampling scheme is…

Q: List or write the sample space for the gender in 3 randomly selected births. www

A:

Q: Describe the EFFECT OF SAMPLE SIZE.

A: In general, large sample size is required to get more precision of data. Sample size plays important…

Q: New York State has approximately 250,000 employees across over 70 state agencies, commissions and…

A: Given information: New York State has approximately 250,000 employees across over 70 state agencies,…

Q: A coach is interested in how many slam dunks the average college freshman at his university can do.…

A: Population:Population consists of the complete subjects that are included in the study for making…

Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.