OpenStax, Introductory Statistics 2e §4.1 Probability Distribution Function (PDF) for a Discrete Random Variable · Exercise 10 · Probability · Discrete distributions
Probability Distribution Function (PDF) for a Discrete Random Variable · Exercise 10
Ellen has music practice three days a week. She practices for all of the three days 85% of the time, two days 8% of the time, one day 4% of the time, and no days 3% of the time. One week is selected at random.
Define the random variable X.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §4.1 Probability Distribution Function (PDF) for a Discrete Random Variable · Exercise 10
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