Choose the best answer. Please show the computation and explain the answer. Which of the following statements is true? I) A and B are independent variables with means of 6 and 8, respectively. Therefore, E(3A - B + 3) = 13. II) A and B are independent variables with variances of 6 and 8, respectively. Therefore, Var(3A - B + 3) = 13. a. I only b. II only c. Both are correct d. Both are false
Choose the best answer. Please show the computation and explain the answer. Which of the following statements is true? I) A and B are independent variables with means of 6 and 8, respectively. Therefore, E(3A - B + 3) = 13. II) A and B are independent variables with variances of 6 and 8, respectively. Therefore, Var(3A - B + 3) = 13. a. I only b. II only c. Both are correct d. Both are false
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 87E
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Choose the best answer. Please show the computation and explain the answer.
Which of the following statements is true?
I) A and B are independent variables with means of 6 and 8, respectively. Therefore, E(3A - B + 3) = 13.
II) A and B are independent variables with variances of 6 and 8, respectively. Therefore, Var(3A - B + 3) = 13.
a. I only
b. II only
c. Both are correct
d. Both are false
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