Solving Probability w/in 1 STD: Stats Problem Homework

[rbailey5]

Homework Statement

I am given a table of x and Probability of x an I have calculated the standard deviation and the variance.

Homework Equations

The Attempt at a Solution

from here how do I calculate the probability that a value is within one standard deviation

 

[ArcanaNoir]

Homework Statement

I am given a table of x and Probability of x an I have calculated the standard deviation and the variance.

Homework Equations

The Attempt at a Solution

from here how do I calculate the probability that a value is within one standard deviation

calculate z=1 minus z= -1 (where z = (x-m)/sigma