We have the following probability table for the random variable X. For what value of a, E[X] = 16.5? X P(X=X) Options: a) 15 10 a 20 25 0.4 0.2 0.1 0.3

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
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Chapter12: Probability
Section12.EA: Extended Application Medical Diagnosis
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Discrete probability distribution 

We have the following probability table for the random variable X. For what value of a, E[X] = 16.5?
X
P(X=x)
Options:
a) 15
b) 10
c) 11
d) 23
10 a
0.4 0.2 0.1 0.3
20
23
25
Transcribed Image Text:We have the following probability table for the random variable X. For what value of a, E[X] = 16.5? X P(X=x) Options: a) 15 b) 10 c) 11 d) 23 10 a 0.4 0.2 0.1 0.3 20 23 25
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