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 -3,3,4,5, and 6.
Solution
To make the table represent a legitimate probability distribution, the sum of all the probabilities must equal 1. Let's denote the missing values as and .
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 0.12. A simple solution could be:
So, the completed table is:
\hline \text{Value } x \text{ of } X & P(X = x) \\ \hline -3 & 0.29 \\ 3 & 0.06 \\ 4 & 0.29 \\ 5 & 0.30 \\ 6 & 0.06 \\ \hline \end{array}$$ Would you like more details on the calculations or have any other questions? --- Here are some related questions: 1. What is a probability distribution, and how is it different from a cumulative distribution? 2. Can you explain the properties of a valid probability distribution? 3. How do you determine the expected value of a discrete random variable? 4. What is the variance of a discrete random variable, and how is it calculated? 5. Can the probabilities in a distribution be negative? Why or why not? 6. How does one interpret the sum of probabilities in a probability distribution? 7. What are some common examples of discrete random variables? 8. How would you adjust the probabilities if the value of $$P(X = 5)$$ was instead 0.25? **Tip:** When working with probability distributions, always ensure that the sum of all probabilities equals 1. This is a fundamental property that must be satisfied.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Probability Theory
Discrete Random Variables
Probability Distributions
Formulas
-
Theorems
-
Suitable Grade Level
High School
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