You just need to divide 5 by 10
5 divided by 10 = 0.5
_ _ _ here are the three digits
Total:
5 ways to choose the first (1, 3, 5, 7, 9)
9 for the second
8 for the third
5*8*9=360.
5 ways to choose the first digit (1, 3, 5, 7, 9)
5 ways to choose the second ( 2, 4, 6, 8, 0)
8 for the third
5*5*8=200
200/360=20/36=10/18=5/9, but it's not one of the choices.
Answer:
The range is: 13. The population mean is: 8.5. The population variance is: 15.85. The population standard deviation is: 3.9812.
Step-by-step explanation:
The range: 15 - 2 = 13
The population mean is:
Mean = ( 2 + 9 + 15 + 5 + 14 + 8 + 11 + 7 + 4 + 10 ) / 10 = 8.5
The population variance ( S² or Sigma² ):
S ² = 1/10 · ( ( 2 - 8.5 )² + ( 9 - 8.5 )² + ( 15 - 8.5 )² + ( 5 - 8.5 )² + ( 14 - 8.5 )² + ( 8 - 8.5 )² + ( 11 - 8.5 )² + ( 7 - 8.5 )² + ( 4 - 8.5 )² + ( 10 - 8.5 )² )
S ² = 15.85
The population standard deviation:
S = √(S²) = √15.85 = 3.9812
The answer is C a refection across the line containing AC