**Questions answered in this
chapter:**

What are the properties of the normal random variable?

How do I use Excel to find probabilities for the normal random variable?

Can I use Excel to find percentiles for normal random variables?

Why is the normal random variable appropriate in many real-world situations?

**What are the properties of the normal
random variable?**

In Chapter 62, you learned that continuous random variables can be used to model quantities such as the following:

Price of Microsoft stock one year from now

Market share for a new product

Market size for a new product

Cost of developing a new product

Newborn baby’s weight

A person’s IQ

Remember that if a discrete random variable ...

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