Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 20 30. 40 50 0.10 0.30 0.20 0.25 0.15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(X)= (b) Find the variance Var(X) of X. Var(x) =
Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 20 30. 40 50 0.10 0.30 0.20 0.25 0.15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(X)= (b) Find the variance Var(X) of X. Var(x) =
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.CR: Chapter 13 Review
Problem 24CR
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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
20
30
40
50
0.10
0.30
0.20
0.25
0.15
Complete the following. (If necessary, consult a list of formulas.)
(a) Find the expectation E (X) of X.
E (X) = 0
(b) Find the variance Var(X) of X.
Var(x) =
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