Topic 3: Probability Distributions

Lesson 3.3: The Normal Distribution — Quiz

Test your understanding of lesson 3.3: the normal distribution with 5 practice questions.

Practice Questions

Question 1

What percentage of observations falls within two standard deviations of the mean in a normal distribution?

Question 2

If the mean of a normal distribution is 100 and the standard deviation is 15, what is the z-score for a value of 130?

Question 3

Which of the following statements about a standard normal distribution is true?

Question 4

In a normal distribution, what is the shape of the probability density function?

Question 5

What is the area under the curve of a normal distribution?