Solve the problem.Find the variance of the scores: 15, 15, 15, 18, 21, 21, 21. Round to tenths.
A. 9.0
B. 2.8
C. 3
D. 7.7
Answer: A
Mathematics
You might also like to view...
Solve the problem.In a certain lottery, 3 different numbers between 1 and 12 inclusive are drawn at random. These are the winning numbers. If you choose 3 different numbers at random between 1 and 12, what is the probability you will match the winning numbers? Assume that the order of the numbers is unimportant.
A. 
B. 
C. 
D. 
Mathematics
Find the area of the region specified by the integral(s).
+ 
A. 8
B. 
C. 
D. 
Mathematics
Simplify the radical. Indicate if the radical is not a real number. Assume that x represents a positive real number.
A. 22 B. 242 C. -22 D. Not a real number
Mathematics
Replace the ? with the correct symbol >, <, =.4 ? 0
A. = B. < C. >
Mathematics