There are 4327 colleges in a certain country and the number full-time students is 13, 287,563. (a) Are the numbers of full-time students at different colleges discrete or continuous? Explain your answer.  (b) What do you think is wrong with surveying college student by mailing questionnaires to 10,000 who are randomly selected?  (c) If we randomly select four colleges and survey all their full-time students, what type of sample is obtained? (random, systematic, convenience, stratified, cluster)

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A: It is given that margin of error (E) is 0.045 and the confidence level is 0.99.

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A: Stratified sampling is a process of random sampling. It is used to divide a population into…

Q: You want to interview 200 students in your school to determine their opinion on the new school…

A:

Q: medical information​ online?" Of 1072 Internet users who chose to​ respond, 38% of them responded…

A: The term used to describe this type of survey is C. The respondents are a voluntary response…

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A: Sample is a small part (or) portion of the population. For example, to check the weights of male in…

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A: The box and whisker plot for a random sample of new cars is provided in the question.

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: 2. A company is taking a survey of its employees and separates them into the following groups:…

A: 2. Experimental Study: If some treatments are applied on the individuals in order to observe the…

Q: A large company has 3000 employees. The management has installed coffee machines everywhere in the…

A: Given information: Level of satisfaction Level of education Total Low education High education…

Q: What do you think is the reason, why researchers prefer to get a sample from the total population…

A: A researcher can carefully design the study which to a large extent try to prevent the biases and…

Q: Suppose you wanted to know the proportion of students who wear glasses on campus and you went ahead…

A: you wanted to know the proportion of students who wear glasses on campus  you went ahead and survey…

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A: NoHerbal Hut 1Herbal Hut 2Herbal Hut…

Q: The winning scores in the U.S. Masters golf tournament in the years from 1982 to 1991 were as…

A: Data given  284,280,277,282,279,285,281,283,278,277

Q: Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them…

A:

Q: A poll asked respondents if they had taken a vacation in the last year. The respondents were…

A: Given information is: From above table, we can conclude the following: Total number of respondents…

Q: The city of Raleigh has 11,700 registered voters. There are two candidates for city council in an…

A: Consider x denotes voter supports Brown. Here, n = 350 and x = 178.

Q: Can someone please explain to me how to get the answers to the following questions...Use the sample…

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Q: The question is asking for all applicable answers and I though it was just the three I had selected…

A:

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

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A: Approximate distribution is normal

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.