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Ivenika [448]
2 years ago
12

In which of the following cases is there an adverse selection problem? Select all that apply. a. A health insurance market, in w

hich the insurers do not know whether or not the applicants for insurance are habitual smokers. b. A motor insurance market, in which the insurers do not know how carefully the insured people drive. c. Online sales of nutritional supplements, when consumers cannot tell whether their contents are as claimed by sellers. d. A firm that employs home-workers, but cannot observe how hard they are working.
Social Studies
1 answer:
irina [24]2 years ago
7 0

Answer:

C. Online sales of nutritional supplements, when consumers cannot tell whether their contents are as claimed by sellers.

Explanation:

Online sales of nutritional supplements, when consumers cannot tell whether their contents are as claimed by sellers is an adverse selection problem.

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In a study of gang behavior, Jankowski (1991) purposefully included at least some participants from several different ethnic gan
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Answer:

The type of sampling used in Jankowski's study of gangs is Option D. Stratified sampling.

Explanation:

With stratified sampling, the researcher will partition the population into different groups, usually based on some characteristic that is common to that group. In this case, it was the different kinds of gang membership. Then, the researcher will take a sample of people within each specific group using another sampling method like simple random sampling for instance. The groups that are used in stratified sampling are called strata. Another example would be a national survey that is divided into strata of the different major ethnic groups that comprise the national population.

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A psychology professor wants to know whether verbal ability is related to memory quality in current first-year students at her s
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Hello. This question is incomplete. The full question is:

"A psychology professor wants to know whether verbal ability is related to memory quality in current first-year students at her small college. Participants in the study (first-year students at her college) complete an online memory task. The students are first shown a list of 60 words. Next they are shown a list that includes five new words that are conceptually similar to words on the original list. Then they are asked to identify the words on the second list that appeared on the original list. She uses the percentage of new but conceptually similar words that were mistakenly thought to be on the original list as her measure of memory quality. She also asks the students to report several characteristics such as their age, gender, and verbal SAT score.

Which of the following are variables in the study? Check all that apply. The students' verbal SAT scores The students' percentage of words that were correctly recognized on the original list The number of students participating in the survey."

Answer:

The student's verbal SAT scores

The student's percentage of words that were correctly recongnized on the original list.

The number of students participating in the survey.

Explanation:

Within all scientific research, variables (dependent and independent) can be verified. These variables correspond to the number of factors that can take on value within the experiment and dissolve results for the research to be completed.

Accordingly, we can see that the variables of the experiment shown above are:

  • The student's verbal score in the SAT: presents a value and shows the difference between the students allowing a comparison to be made.
  • The percentage of words of the student that were correctly refilled in the original list: Also assumes a value and shows a result that is directly related to the veracity of the hypothesis of the study:
  • The number of students who participated in the study: It also assumes a value and will allow calculations and graphs to be made to show the results.
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