Identify the type of sampling described by the proposal.Thirty-five math majors, 33 music majors and 53 history majors are randomly selected from 555 math majors, 559 music majors and 556 history majors at the state university.
A. cluster sample
B. convenience sample
C. simple random sample
D. stratified sample
E. systematic sample
Answer: D
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Write one or more inequalities that describe the set of points.The slab bounded by the planes x = -8 and x = 6 (planes included)
A. x ? -8 and x ? 6 B. x = -8 and x = 6 C. -? < y < ? and -? < z < ? D. -8 ? x ? 6
At what points is the given function continuous?f(x, y) = tan (x + y)
A. All (x, y) ? 
B. All (x, y) ? (0, 0)
C. All (x, y) such that x + y ? 
, where n is an integer
D. All (x, y)
Factor out the greatest common factor.14x4 - 4x3 + 8x2
A. 2x2(7x2 - 2x + 4) B. x2(14x2 - 4x + 8) C. 2x(7x3 - 2x2 + 4x) D. 2(7x4 - 2x3 + 4x2)
Graph the function. State the domain and the range of the function.f(x) = log1/4 x
A. Domain: (-?, ?); Range: (0, ?)
B. Domain: (0, ?); Range: (-?, ?)
C. Domain: (0, ?); Range: (-?, ?)
D. Domain: (-?, ?); Range: (0, ?)