Question 2A A discrete random variable X has probability distribution given by X 1 2 3 4 5 P(X=x) 0.2 0.25 0.14 a 0.05 P(1 ≤ X ≤ 3)  is   a.0.25 b.0.41 c.0.34 d.0.59

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
Problem 14E
icon
Related questions
Question
100%

Question 2A

A discrete random variable has probability distribution given by

X

1

2

3

4

5

P(X=x)

0.2

0.25

0.14

a

0.05

P(1 ≤ X ≤ 3)  is

 

a.0.25
b.0.41
c.0.34
d.0.59
Question 2B 

A discrete random variable has probability distribution given by

X

1

2

3

4

5

P(X=x)

0.2

0.25

0.14

a

0.05

The Variance of X … Var(X) is

a.1.5739

b.6.6660
c.2.810
d.9.470
 
 
Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

Blurred answer
Recommended textbooks for you
Calculus For The Life Sciences
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning