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.The number of students scoring 75 points or more is approximately
A. 83.
B. 75.
C. 158.
D. 125.
E. none of these
Answer: D
Mathematics
You might also like to view...
Match the graph of the rational function with its equation.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics
Translate the English statement into an inequality.The speed of the bike is more than 16 mph. (Use the variable s for the speed.)
A. s ? 16 B. s > 16 C. s ? 16 D. s < 16
Mathematics
Factor using the reverse FOIL method.10x2 + 21x + 9
A. (10x + 3)(x + 3) B. (2x - 3)(5x - 3) C. (10x - 3)(x - 3) D. (2x + 3)(5x + 3)
Mathematics
Find the Foci of the conic.
?
?
A. Foci: 
B. Foci: 
C. Foci: 
D. Foci: 
E. Foci: 
Mathematics