Normal Probability Distribution

What shape is a normal distribution curve?

• Half curve

• Round curve

• Bell curve

• Square curve

What is the the total area under the standard normal distribution curve?

• 100

• 25

• .5

• 1

The Empirical Rule's percents are:

• 68-95.7-99

• 68-95-99.7

• 68.7-95-99

The standard normal distribution is also called normal curve.

• TRUE

• FALSE

The area under a normal curve is 100.

• TRUE

• FALSE

The important values that best describe a normal curve are the mean and standard deviation.

• TRUE

• FALSE

The curve of a normal distribution extends indefinitely at the tails.

• TRUE

• FALSE

Under a normal curve, a specific proportion may also be expressed in terms of percentage.

• TRUE

• FALSE

In inferential statistics, the normal curve is useful in decision making.

• TRUE

• FALSE

The normal curve is bell-shaped.

• TRUE

• FALSE