Author Question: According to the Empirical Rule, the percentage of observations in a data set (providing that the ... (Read 80 times)

piesebel · **on:** Jun 24, 2018

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