Explain what a discrete random variable is. List examples. What are the requirem

Question

Explain what a discrete random variable is. List examples. What are the requirements for a discrete probability distribution? Explain what binomial probability distribution is. Explain what a continuous random variable is. List examples. Explain some basic characteristics of Normal Distribution. What is the standard Normal Distribution? Explain the difference between a raw score and a standard score. Mow to convert a raw score to a standard score, and how to convert a standard score to a raw score? Explain how to use fable 2 for each of the following intervals z a a

Explanation / Answer

5.

A value from any normal distribution can be transformed into its corresponding value on a standard normal distribution using the following formula:

Z = (X - )/

where Z is the value on the standard normal distribution, X is the value on the original distribution, is the mean of the original distribution, and is the standard deviation of the original distribution.

Thus to convert a raw score X to z use Z = (X - )/

and to convert a z score to a raw score use:

X=mu+z*sigma

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