Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 0.15 20 0.30 30 0.10 40 0.05 50 0.15 60 0.25 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (x) = D %3D (b) Find the variance Var(X) of X. Var (x) = 0
Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 0.15 20 0.30 30 0.10 40 0.05 50 0.15 60 0.25 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (x) = D %3D (b) Find the variance Var(X) of X. Var (x) = 0
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
Section13.3: Special Probability Density Functions
Problem 54E
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Transcribed Image Text:Let X be a random variable with the following probability distribution.
Value x of X P(X=x)
10
0.15
20
0.30
30
0.10
40
0.05
50
0.15
60
0.25
Complete the following. (If necessary, consult a list of formulas.)
(a) Find the expectation E (X) of X.
E (x) = [
%3D
(b) Find the variance Var(X) of X.
Var (X) = D
%3D
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