I. A survey of young adults found that 85% of respondents look first to phone-ba
ID: 3314321 • Letter: I
Question
I. A survey of young adults found that 85% of respondents look first to phone-based apps for national and international news. The poll found that 10% look to a website and 5% look to television and other sources. The poll was taken from a random sample of phone numbers in the area. a. Is the information obtained categorical or quantitative? b. Name two (of the many) potential problems with this survey. 2. "Polar Bears dig the Cold," was an article during the summer of 2014, in which the United States had substantially milder than normal daytime high temperatures. The authors collected data from a representative sample of 20 zoos across the United States by examining daytime high temperatures and closed-circuit camera footage of the number of appearances of polar bears in their enclosures a. Was this an experiment, an observational study, or a sample survey? How do you know? b. There are two variables of interest. Which is the explanatory variable? How do you know? 3. An experiment is established to gauge the benefits of using an online text book versus a printed text. Two classes of students, a group that takes the course on Mondays and Wednesdays and another that takes the same course on Tuesdays and Thursdays, will be utilized in the experiment. a. Offer a suggestion on how a control group and a treatment group could be established. b. Define the treatment and how it should be applied so as to avoid any bias. c. Offer suggestions on exactly what data would be measured in the experiment and how it might be used to draw conclusions.Explanation / Answer
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1) a) Quantitative data is information about quantities; that is, information that can be measured and written down with numbers. Some examples of quantitative dataare your height, your shoe size, and the length of your fingernails
So, this is a quantitative data.
b) If the phone numbers are chosen at random, how did they ensure that the numbers are of young adults?
Also, Was the approprate sample size taken?
5% is a good large enough number. So, is the 'other sources' defined?