Mathematics, 17.07.2019 16:00 Jadalamanna
Amedical researcher studies the correlation between the number of hours spent at office jobs and the incidence of chronic back ache. which statement best describes why the investigation is an observational study? a) the researcher does not use a control group. b) the researcher does not intervene to vary conditions. c) it is not possible to obtain a random sample of office workers. d) it is not possible to establish a cause-effect relation between the variables.
Answers: 1
Mathematics, 21.06.2019 16:30
Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done
Answers: 3
Mathematics, 22.06.2019 06:50
The stem-and-leaf plot below shows the number of pages each student in the class read the previous evening. according to the plot, 75% of students read less than 13 pages. 33 pages. 35 pages. 46 pages.
Answers: 2
Mathematics, 22.06.2019 07:00
For brainliest and 40 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1
Answers: 1
Amedical researcher studies the correlation between the number of hours spent at office jobs and the...
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