Find the absolute value.
A. 45.4
B. 0
C. -22.7
D. 22.7
Answer: D
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Solve the problem.Refer to the following preference schedule.
Find the winner by the method of pairwise comparisons.
A. C B. A C. D D. B
Find the indicated probability or percentage for the normally distributed variable.The mean weekly income of teachers in one state is $390 with a standard deviation of 
The incomes are approximately normally distributed. What is the probability that a randomly selected teacher earns more than $425 a week?
A. 0.099 B. 0.215 C. 0.218 D. 0.782
Find the probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1111?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.
A. 0.073 B. 0.927 C. 0.051 D. 81
Graph the parabola.y = -2x2 + 2x + 1
A. 
B. 
C. 
D. 