Let f(x) = (3x - x²) if 0 ≤ x ≤ 3 and f(x) = 0 if x <0 or x > 3. (a) For what value of k is f a probability density function? (b) For that value of k, find P(X > 1). (c) Find the mean.

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.
Chapter13: Probability And Calculus
Section13.1: Continuous Probability Models
Problem 7E
icon
Related questions
Question
Let 
f(x) = k(3x − x2)
 if 
0 ≤ x ≤ 3
 and 
f(x) = 0
 if 
x < 0
 or 
x > 3.
(a)
For what value of k is f a probability density function?
k = 
 
(b)
For that value of k, find 
P(X > 1).
P(X > 1) =
(c)
Find the mean.
? =
Let f(x) = k(3x - x²) if 0 ≤ x ≤ 3 and f(x) = 0 if x <0 or x > 3.
(a) For what value of k is f a probability density function?
(b)
(c)
For that value of k, find P(X > 1).
Find the mean.
Transcribed Image Text:Let f(x) = k(3x - x²) if 0 ≤ x ≤ 3 and f(x) = 0 if x <0 or x > 3. (a) For what value of k is f a probability density function? (b) (c) For that value of k, find P(X > 1). Find the mean.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
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
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781337278461
Author:
Ron Larson
Publisher:
Cengage Learning