oneurchners collect data by interviewing athletes who have won Olympic gold meda
ID: 3068293 • Letter: O
Question
oneurchners collect data by interviewing athletes who have won Olympic gold medals from 1980 to 1992. A) Retrospective C) Prospective B) Cross-sectional D) None of these 7. A marketing firm does a survey to find out how many people use a product. Of the one hundred people contacted, fifteen said they use the product. A) Experimental B) Observational 7. 8. Identify the type of sampling that was used: A market researcher selects 500 people from each of 10 cities.8. A). Convenience B). Random C). Stratified D). Systematic E). Cluster Answer the following questions. The value of each question is given after the question Be sure to answer the question completely 9. You plan to make a survey of 200 people. The plan is to talk to every 15h person coming out of the movie theater. Is there a problem with your plan? Please then explain why there is or isn't a problem with your plan. (Worth 3 points)Explanation / Answer
6 ) The correct choice is A
Because The sampling unit gold medalist in the past Olympic games.
7) The correct choice is B) Observational
Because we take the sample by observing and not conduct any experiment on the people.
8) The correct choice in C ) Stratified.
Because we take sample from each of the group ( Strata ).
9. No, there is no problem because in the movie theater the persons comes out randomly.
And so our sanple is a random sample.
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