This Concept expands upon the previous by discussing further the normal distribution and the probabilities associated with it by looking at the normal density curve.
Given any problem with a standard deviation and mean, you can change them into z-scores to find the probability of getting a certain point within the distribution above or below it.
Practice Density Curve of the Normal Distribution questions
covers normal density curves, the empirical rule, and z-scores
A table of probabilities based on z-score values. Includes an example that explains how to use the table.
A calculator used to calculate the probability for a z-interval without a table.
Tables showing the probabilities for different z-intervals.