Solve the problem.A controlled placebo experiment is said to be double-blind when
A. the members of the control group are told they are in the treatment group and vice versa.
B. none of the scientists conducting the study know which patients are in the control group and which patients are in the treatment group.
C. neither the members of the control group or the members of the treatment group know to which of the two groups they belong.
D. neither the subject nor the scientists conducting the study know which individuals are in the treatment group and which are in the control group.
E. none of these
Answer: D
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Solve the problem.A charged particle of mass m and charge q moving in an electric field E has an acceleration a given by 
where q and E are constants. Find 
.
A. 
= - 
B. 
= 
C. 
= 
D. 
= 
Find the domain and range of the inverse of the given function.f(x) = x6 + 2, x ? 0
A. Domain: (-?, 0]; range: (-?, 2] B. Domain and range: all real numbers C. Domain: [2, ?); range: [0, ?) D. Domain: [0, ?); range: [2, ?)
Write a word name for the decimal.3.472
A. Three and four hundred seventy-two millionths B. Three and four hundred seventy-two tenths C. Three and four hundred seventy-two thousandths D. Three and four hundred seventy-two hundredths
The given angle is in standard position. Determine the quadrant in which the angle lies.-12°
A. Quadrant II B. Quadrant IV C. Quadrant III D. Quadrant I