Please help me with this :(
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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.
Answers: 2
Mathematics, 21.06.2019 17:00
Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?
Answers: 1
Mathematics, 21.06.2019 17:40
If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then
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Mathematics, 21.06.2019 21:00
X+y=-4 x-y=2 use elimination with adding and subtraction
Answers: 3
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