Math Problem Statement
Solution
To complete the probability distribution for the random variable , we need to ensure two conditions for the probabilities:
- The sum of all probabilities must equal 1.
- Each probability must be non-negative.
Given the table:
Value of | |
---|---|
-2 | 0.10 |
2 | 0.18 |
3 | ? |
4 | 0.11 |
6 | ? |
Step 1: Set up the equation for the total sum of probabilities.
The total must sum to 1, so:
Step 2: Solve for the sum of .
Step 3: Distribute the remaining probability.
This leaves . Without further constraints, one possible solution is to assign equal probabilities:
This would create a valid probability distribution.
Would you like more details on how to adjust this or have any specific questions?
Here are 5 follow-up questions related to probability distributions:
- What is a probability distribution, and how is it defined for discrete variables?
- How do you verify if a given set of probabilities forms a valid distribution?
- How can you find the expected value (mean) of a discrete random variable?
- What is the significance of the variance and standard deviation in probability distributions?
- How can probability distributions be applied in real-world scenarios, such as decision-making?
Tip: When solving probability questions, always ensure the total sum of probabilities equals 1, and each individual probability must be between 0 and 1.
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Math Problem Analysis
Mathematical Concepts
Probability Distribution
Discrete Random Variable
Probability Theory
Formulas
Sum of probabilities must equal 1
Theorems
Probability distribution properties
Suitable Grade Level
Grades 9-12
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