Question

Hello can you please help with the problem written below:

A normally distributed variable has approximately 95% of values within ______ standard deviations of the mean.

Question options:
-one
-three
-four
-two

Answer 1

Two

Explanation:

About 95% of an x value lies between

-2 and +2 standard deviation of the mean.

Answer 2

Answer of this question is.

three