According to the Empirical Rule, the percentage of observations ...

[piesebel]

According to the Empirical Rule, the percentage of observations in a data set (providing that the data set has a bell-shaped and symmetric distribution) that should fall within two standard deviations of their mean is approximately:
 
  A) 90
  B) 95
  C) 97.5
  D) 100

Question 2

What is the complement of event B?
 
  A) 3, 5, 7, 9, 11
  B) 2, 4, 6, 8, 10, 12
  C) 2, 3, 4, 5, 6, 7
  D) 7, 8, 9, 10, 11, 12

[b614102004]

Answer to Question 1

B

Answer to Question 2

C

[piesebel]

TYSM

[jackie]

Thanks for the timely response, appreciate it