z-scores

Introduction to z-scores

Using `pnorm`

## use pnorm function to compute probability

## what percentage of the data lies left of a z-score of 1.5?

## what percentage of the data lies to the right of a z-score of -2.1?

## what percentage of the data lies to the right of a z-score of 4.3?

## what percentage of the data lies between a z-score of 0 and 0.5?

## what percentage of the data lies between a z-score of -2 and -2.5?

Using `qnorm`

## use qnorm to find x based on a given probability

## 41% of the data in a normal distribution lies left of what /z/-score?

## 4% of the data in a normal distribution lies right of what /z/-score?

## between what two /z/-scores will 60% of the data lie?