Math Problem Statement
Fill in the P(X=x) values to give a legitimate probability distribution for the discrete random variable X , whose possible values are 0,3,4,5, and 6.
Solution
To complete the table and make it represent a legitimate probability distribution, the sum of all probabilities must equal 1.
Given:
Let the missing values be and .
The total probability should sum to 1:
Simplifying, we get:
Now, the values of and must be non-negative and add up to 0.27. A simple solution could be:
So, the completed table is:
\hline \text{Value } x \text{ of } X & P(X = x) \\ \hline 0 & 0.23 \\ 3 & 0.13 \\ 4 & 0.14 \\ 5 & 0.23 \\ 6 & 0.27 \\ \hline \end{array}$$ Would you like more details on the calculations or have any other questions? --- Here are some related questions: 1. How do you calculate the mean (expected value) for this discrete probability distribution? 2. What is the cumulative distribution function (CDF) for the variable $$X$$ in this distribution? 3. Can you explain how to calculate the variance of $$X$$ for this distribution? 4. What would change in the distribution if $$P(X = 6)$$ were instead 0.20? 5. How can this distribution be interpreted in a real-world scenario? 6. What other checks can be done to verify if a distribution is valid? 7. If you wanted to add a new possible value $$X = 2$$ to the distribution, how would that affect the probabilities? 8. What are the implications of having two probabilities be exactly equal in a distribution? **Tip:** When distributing probabilities, ensure that the sum of the assigned probabilities equals 1 and that each individual probability is non-negative and does not exceed 1.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Probability Theory
Discrete Random Variables
Formulas
Probability Distribution
Sum of Probabilities
Theorems
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Suitable Grade Level
Undergraduate
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