The random variable X has density fx (x) = ax? +b for 0 < x <1 (and equal to 0 otherwise), where a and b are positive constants. Also, the 5 expected value of X is E (X) = . 8 Use this information to determine a and b. Then P (X > 0.4) =

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The random variable X has density fx (x) = ax? +b for 0 < x < 1 (and
equal to 0 otherwise), where a and b are positive constants. Also, the
5
expected value of X is E (X) = .
8
Use this information to determine a and b.
Then P (X > 0.4) =
Transcribed Image Text:The random variable X has density fx (x) = ax? +b for 0 < x < 1 (and equal to 0 otherwise), where a and b are positive constants. Also, the 5 expected value of X is E (X) = . 8 Use this information to determine a and b. Then P (X > 0.4) =
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