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12.2. Definition of Probability Mass Function (PMF)
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Mixed questions from across the chapter. Your answers get marked.
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2 cards from this lesson. Good the night before a test.
Try these first
- 1.
Define Probability Mass Function (PMF).
Hint
What does PMF stand for?
- 2.
List two examples of discrete random variables.
Hint
Think of common experiments.
- 3.
What does PMF stand for?
- Probability Mass Function
- Probability Mean Function
- Probability Model Function
Hint
Focus on the word 'Mass'.
- 4.
True or False: PMF can be used for continuous random variables.
- True
- False
Hint
Consider the variable type PMF applies to.
- 5.
A factory produces light bulbs, and history shows that 90% are good and 10% are defective. Create a PMF for the quality of a sample of three light bulbs.
Hint
Use the binomial probability formula.
- 6.
You roll a die three times. What is the PMF for rolling a total of 10?
Hint
Think about breaking down the outcomes and using combinations.
Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
4 more questions available
Enrol freeQuiz
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
1 more question available
Enrol freeChallenge Problems
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting