# Category Math

### The Monty-Hall-Problem

The problem is a brain-teaser, in the form of a probability puzzle. It has sparked endless debate. See the solution with a simulator.

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5 minutes reading time

### Cumulative standard normal distribution

Easy calculation of probabilities using a computed z-table.

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2 minutes reading time

### Statistics challenge and solution

How the central limit theorem of statistics can be useful to solve business problems.

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3 minutes reading time