Social Studies, 07.10.2019 16:20 smartoa
In an experiment, joey and elena are trying to determine whether super grow fertilizer works better than mo' grow fertilizer on pepper plants. they buy 10 pepper plants that are the same size and water them the same amount three times per week. they use super grow on half of the plants and mo'grow on the other half. all of the plants receive the same amount of sunlight. joey and elena measure the height of the plants at the beginning of the experiment and every 6 days for one month (30 days).
 which of the factors in the experiment are controlled variables?
Answers: 2
Social Studies, 22.06.2019 10:30
According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.
Answers: 3
Social Studies, 22.06.2019 21:40
Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is:
Answers: 3
Social Studies, 22.06.2019 23:30
For an actor, keeping his mind on will ultimately his performance.
Answers: 2
Social Studies, 23.06.2019 07:30
Which statement about mound builder works is true? earthen mounds were created for children to play on. bowls shaped like animals were made of stone. portraits were made of solid gold and painted with bright colors
Answers: 1
In an experiment, joey and elena are trying to determine whether super grow fertilizer works better...
Mathematics, 06.06.2020 17:57
Mathematics, 06.06.2020 17:57
Mathematics, 06.06.2020 17:57
Mathematics, 06.06.2020 17:57