- #1

- 10

- 0

## Homework Statement

Assume x is normally distributed with a mean of 5 and standard deviation of 4. Determine value of x that solves:

P(-X<x-5<X) = .99

## Homework Equations

I have been using normalCDF and inverse functions on the TI-84 to solve, and I understand how to do these without the calc as well using the standard (x-mean)/stand dev techniques.

## The Attempt at a Solution

I have a good understanding of how to work the general problems as this is the last one out of 50 I have solved. The issue is how to start this one? The teacher left a mysterious hint: Distribution?