Solve the problem.Which of the following is unavoidable in a survey using random sampling?
A. sampling bias
B. confounding variables
C. sampling variability
D. nonresponse bias
E. none of these
Answer: C
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Find the coordinates of the vertex and the intercepts of the quadratic function. When necessary, approximate the x-intercepts to the nearest tenth.f(x) = x2 - 10x - 11
A. V(5, -6); I(0, 11); (-11, 0); (11, 0) B. V(5, 6); I(0, 11; (1, 0); (-11, 0) C. V(-5, -36); I(0, -11); no x-intercepts D. V(5, -36); I(0, -11); (11, 0); (-1, 0)
Find the real or imaginary solutions by using the quadratic formula.5n2 = -10n - 2
A. 
B. 
C. 
D. 
Fill in the blank.A prime number has only two factors. They are _____ and _____.
A. 0, 1 B. itself, 0 C. itself, 1
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x + 3 from x = 0 to x = 2; n = 4
A. 17 B. 13 C. 15 D. 11