If the expected value of X is u = 1.25. 1. Calculate the value of a & b. 2. What is Var (X)? Sd (X)?
If the expected value of X is u = 1.25. 1. Calculate the value of a & b. 2. What is Var (X)? Sd (X)?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 24E
Related questions
Question
![B-Suppose a random variable X has probability function
3
P(X=x)
0.625
b.
0.125
a
If the expected value of X is u =1.25.
1. Calculate the value of a & b.
2. What is Var (X)? Sd (X)?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F98663f37-e477-4e00-a6fa-e75aeb349630%2F679a80af-4cec-4970-b2f4-1b049e8154a4%2Fy35q18i_processed.jpeg&w=3840&q=75)
Transcribed Image Text:B-Suppose a random variable X has probability function
3
P(X=x)
0.625
b.
0.125
a
If the expected value of X is u =1.25.
1. Calculate the value of a & b.
2. What is Var (X)? Sd (X)?
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