x 1 2 3 4 Total P(x) 0.1 0.3 0.4 0.1 1 Question: Find (a) that makes P(X) a probability distribution function. Find E(X) Find Var.(X) (ðœŽx^2)
Added by Benjamin P.
Step 1
Therefore, we need to find the value of A that makes the sum of all probabilities equal to 1. 0.1 + A + 0.3 + 0.4 = 1 A = 0.2 Therefore, P(X) becomes: x 1 2 3 4 Total P(x) 0.1 0.2 0.3 0.4 1.0 Show more…
Show all steps
Close
Your feedback will help us improve your experience
Aarti Kumari and 74 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Question # 3: Given the following table: 1- Find (a) that makes P(X) a probability distribution function. 2- Find E (X) 3- Find Var. ( X) ( σ²_x )
Madhur L.
Calculate the expected value of X, E(X), for the given probability distribution.
Manisha S.
Calculate the expected value of X, E(X), for the given probability distribution. x0 ,1, 2, 3 P(X = x) 0.1 ,0.2 ,0.2 ,0.5 E(X) =
Sanchit J.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Watch the video solution with this free unlock.
EMAIL
PASSWORD