A Random Variable X Has a Normal Distribution with a Mean

question 27

True/False

A random variable X has a normal distribution with a mean of 250 and a standard deviation of 50.Given that X = 175,its corresponding value of Z is −1.50.

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Definitions:

Percent

A mathematical term representing a part per hundred in everything from finance to statistics.

Economic Growth

An increase in the amount of goods and services produced per head of the population over a period of time, often measured as the percent rate of increase in real gross domestic product (GDP).

Nations

Large groups of people united by common descent, history, culture, or language, inhabiting a particular country or territory.

Century

A period of 100 years, commonly used as a unit of time to mark historical or chronological significance.