Mathematics, 25.11.2021 15:10 winterblanco

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Mathematics, 21.06.2019 15:00

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

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Mathematics, 21.06.2019 19:00

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Mathematics, 21.06.2019 22:30

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Mathematics, 21.06.2019 23:00

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type ofâ€‹ sampling? who would be excluded from the survey and how might this affect the results of theâ€‹ survey? what is the frame for this type ofâ€‹ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of theâ€‹ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.

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