Let X be a random variable. Suppose that E(X) = 4 and Var(X) = 9. Find (a) E(3X + 4). (b) Var(2X + 16). (c) Var (-3X - 5). (d) E(4X² + 2).
Let X be a random variable. Suppose that E(X) = 4 and Var(X) = 9. Find (a) E(3X + 4). (b) Var(2X + 16). (c) Var (-3X - 5). (d) E(4X² + 2).
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 40E
Related questions
Question
Only typing answer
Please explain step by step without table and graph thankyou.
![Let X be a random variable. Suppose that E(X) = 4 and Var(X) = 9. Find
(a) E(3X + 4).
(b) Var (2X + 16).
(c) Var (-3X - 5).
(d) E(4X² + 2).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fefbe00a6-f64c-4410-ae7e-5ce76fa3db2b%2F1cd6dae5-c7e6-455d-8d9f-829d44961e57%2Fx1x2gcc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Let X be a random variable. Suppose that E(X) = 4 and Var(X) = 9. Find
(a) E(3X + 4).
(b) Var (2X + 16).
(c) Var (-3X - 5).
(d) E(4X² + 2).
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 6 steps with 20 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
![College Algebra](https://www.bartleby.com/isbn_cover_images/9781938168383/9781938168383_smallCoverImage.gif)
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
![College Algebra](https://www.bartleby.com/isbn_cover_images/9781938168383/9781938168383_smallCoverImage.gif)