Suppose that X is a continuous unknown with -2 < S2 with PDF denoted f satisfying $ (2) = c (4 – z²), –2 sas2. Here e is a positive normalizing constant. What is the value of c?

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.
Chapter3: The Derivative
Section3.3: Rates Of Change
Problem 3E
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How do I find the expected value of x given its PDF and an unknown positive normalizing constant?

Suppose that X is a continuous unknown with -2 < r < 2
with PDF denoted f satisfying
f (2) = c (4 – a*), -2 sas 2.
Here c is a positive normalizing constant. What is the value
of c?
O 8/3
O 3/32
O 32/3
O 3/8
O NONE OF THE OTHERS
Transcribed Image Text:Suppose that X is a continuous unknown with -2 < r < 2 with PDF denoted f satisfying f (2) = c (4 – a*), -2 sas 2. Here c is a positive normalizing constant. What is the value of c? O 8/3 O 3/32 O 32/3 O 3/8 O NONE OF THE OTHERS
Suppose that X is a continuous unknown all of whose values
are between -5 and 5 and whose PDF, denoted f, is given by
f (x) = c (25 – a²), –5 <x < 5,
and where c is a positive normalizing constant. What is the
expected value of X²?
15/4
O 4/15
5
O NONE OF THE OTHERS
O 25
Transcribed Image Text:Suppose that X is a continuous unknown all of whose values are between -5 and 5 and whose PDF, denoted f, is given by f (x) = c (25 – a²), –5 <x < 5, and where c is a positive normalizing constant. What is the expected value of X²? 15/4 O 4/15 5 O NONE OF THE OTHERS O 25
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