250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.Approximately what percentage of the test scores had standardized values between -3 and 3?
A. 95%
B. 68%
C. 99.7%
D. 50%
E. none of these
Answer: C
Mathematics
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Add: – 5 + 5
A. 0 B. 10 C. – 10 D. 20
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Identify the number as prime or composite.16
A. Composite B. Prime
Mathematics
Solve the inequality and graph the solution set.|z - 7| ? 0
A. 7 ? z ? -7 ; [7, -7]
B. No solution
C. z ? 7 ; [7, ?)
D. All real numbers ; (-?, ?)
Mathematics
Provide the appropriate response.Consider the circle whose equation is (x - 2)2 + (y + 8)2 = 64. What are the coordinates of its center?
A. (-2, 8) B. (2, 8) C. (-2, -8) D. (2, -8)
Mathematics