You're doing an experiment to test whether students fed a new element, "brainium", will do better on tests. 50 students are fed 250 mg of brainium everyday for a week, and 50 students are fed 250 mg of a placebo (something that looks like brainium, but isn't) everyday for a week. After the week of treatment all students are given the same test. Which are controlled variables? Select all that apply. O The 50 students taking brainium. O The 50 students taking the placebo. The # of students. The amount (250 mg). Time (one week). The test scores.
You're doing an experiment to test whether students fed a new element, "brainium", will do better on tests. 50 students are fed 250 mg of brainium everyday for a week, and 50 students are fed 250 mg of a placebo (something that looks like brainium, but isn't) everyday for a week. After the week of treatment all students are given the same test. Which are controlled variables? Select all that apply. O The 50 students taking brainium. O The 50 students taking the placebo. The # of students. The amount (250 mg). Time (one week). The test scores.
Chapter9: Parenteral Medication Labels And Dosage Calculation
Section: Chapter Questions
Problem 28SST
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Transcribed Image Text:You're doing an experiment to test whether students fed a new element, "brainium",
will do better on tests. 50 students are fed 250 mg of brainium everyday for a week,
and 50 students are fed 250 mg of a placebo (something that looks like brainium,
but isn't) everyday for a week. After the week of treatment all students are given the
same test.
Which are controlled variables? Select all that apply.
The 50 students taking brainium.
The 50 students taking the placebo.
The # of students.
OThe amount (250 mg).
Time (one week).
The test scores.
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