Chapter 5 Stats

If the domain of a uniform continuous probability density function is 3.0 < X < 22.0, then its height is

• 0.0526

• 0.045

• 1

• 0.322

True/False: All normal curves are symmetric and bell-shaped.

• True

• False

If the domain of a continuous uniform probability density function is 1.0 < X < 15.0, then its height is

• 0.15

• 0.0356

• 0.0671

• 0.0714

The Standard Normal curve has a mean of zero and a standard deviation of one.

• True

• False

There are as many possible Normal Curves as there are possible combinations of means and standard deviations.

• True

• False

By the Empirical Rule 99.7% of the area under a normal curve is within ___ standard deviations of the mean.

For a standard normal density function: P(z > 2) =

• 0.569

• 0.023

• 0.977

• 1

By the Empirical Rule 68% of the area under a normal curve is within how many standard deviations of the mean?

• 0

• 1

• 2

• 3

By the Empirical Rule 95% of the area under a normal curve is within how many standard deviations of the mean?

• 0

• 1

• 2

• 3

What is the standard deviation of a

probability distribution?