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need to know the answers for both the questions. I have doubts. 3. [4 marks] An online questionnaire is sent out to all 500 students

need to know the answers for both the questions. I have doubts.

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3. [4 marks] An online questionnaire is sent out to all 500 students in an MBA Statistics class at a business school in Ontario using the list of registered students in the MBA Statistics class. One of the questions asked them to report their total personal investment on the stock market. They received responses from 20% of the students. Identify the following items: a. The population of interest b. The sampling frame 0. The sample d. Any potential sources of bias you can detect and any problems you see in generalizing to the population of interest. 4. Identify the sampling method used in the following cases. [2 marks] (i) Jane randomly selects 5 baskets from a large set of baskets in her shop. (it) Prof. Adu separates his students into 2 groups. [Phone users and NoniPhone users and randomly selects 10 students from each of the 2 groups to form a sample of 20 students

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