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According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.
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Social Studies, 22.06.2019 17:30
Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral
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Social Studies, 22.06.2019 23:00
Drag and drop to identify the factors contributing to south asia high poverty rates. each phrase may be used once or not at all
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What was admiral byrd's autobiographys theme...
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