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2 cards from this section. Quick, good the night before a test.
Define Probability Mass Function (PMF).
What does PMF stand for?
List two examples of discrete random variables.
Think of common experiments.
What does PMF stand for?
Focus on the word 'Mass'.
True or False: PMF can be used for continuous random variables.
Consider the variable type PMF applies to.
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.
Use the binomial probability formula.
You roll a die three times. What is the PMF for rolling a total of 10?
Think about breaking down the outcomes and using combinations.
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