Question

State the empirical rule as specialized to variables.

For any variable whose distribution ______ the following properties hold. Answer options: is triangular, is uniform, is bell shaped
Property 1:Approximately _____of all possible observations lie within one standard deviation to either side of the mean.
Property 2: Approximately _____ of all possible observations lie with in two standard deviations to either side of the mean.
Property 3: Approximately _____ of all possible observations lie within three standard deviations to either side of the mean.
a. 89%, 99.7%, 100%, 75%, 95%, 68%
b. 99.7%, 68%, 95%, 100%, 75%
c. 95%, 99.7%, 100%, 68%, 89%

Answer 1

bellshaped

a) 68

b) 95

c) 99.7

Explanation:

A bell shaped distribution is a normal distribution.

Those percentages: 68, 95 and 99.7 correspond to the values that lies around the mean within one, two and three standard deviations.