Question

if the data represented by the graph is normally distributed, what are the endpoints of the middle 95% of the data

Answer 1

By using the empirical rule of a normal distribution, If the data represented by the graph is normally distributed, the endpoints of the middle 95% of the data are "(D) 2.4 and 13.2."

There exists the same question from other source with the following choices:
(A) 4.2 and 11.4
(B) 6 and 9.6
(C) 4.2 and 9.6
(D) 2.4 and 13.2
(E) 6 and 11.4