Find the expected value of the random variable.The random variable X is the number of complaints per day received by a business bureau.. Find the expected number of complaints per day. 
A. 2.85
B. 2.98
C. 3.01
D. 2.73
Answer: B
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Solve the problem.If the Hamilton Method is used to apportion legislative seats to three states with the populations given in the table, then the Alabama Paradox occurs when the number of seats being apportioned increases from 150 to 151. 
In which state does the paradox show up?
A. b B. c C. a
Solve the problem using your calculator.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Use linear regression to find a linear function that predicts a student's score on Test B as a function of his or her score on Test A.
A. y = 0.930 - 19.4x B. y = -19.4 - 0.930x C. y = -0.930 + 19.4x D. y = 19.4 + 0.930x
Solve the problem.An amusement park has a Ferris wheel with a height of 77 meters and a diameter of 72 meters. Using the drawing, write the equation of the wheel.
A. x2 + (y - 41)2 = 362 B. x2 + (y - 41)2 = 722 C. x2 + y2 = 362 D. x2 + (y + 41)2 = 362
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation.3x + y + 3z - w = -6 -x - 2y + z - 4w = 5 -2x + 3y + 3z + w = 7 3x - y - z - 4w = -13
A. (-1, 0, 4, 3) B. (-3, -2, 2, 1) C. (-3, 2, -2, -1) D. No solution