Probability Tree (Q3)
One more exam-style question before we get to the Binomial section of Chapter 7. This solution requires the use of the probability tree to find the probability distribution of x.
REMEMBER » Using a Probability Tree to Get a Discrete Probability Distribution:
- Each pathway through the tree will lead to an outcome that can be represented as a value of (x) on the discrete random variable table.
- Add the joint probabilities of all outcomes with the same value of (x) to get the probability P(x) on the dicrete probability distribution table.
Test your understanding:
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Question 1 of 2
1. Question
The probability distribution of a discrete random variable X is shown below, where X represents the number of cars owned by a family.
P(0 < X < 1) is equal to:
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Question 2 of 2
2. Question
The probability distribution of a discrete random variable X is shown below, where X represents the number of cars owned by a family.
P(1 ≤ X < 3) is equal to:
CorrectIncorrect