Let X be a random variable with the following probability distribution. Value x of XP (X=x) -1 0 1 2 0.05 0.25 0.55 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) = 0 X
Let X be a random variable with the following probability distribution. Value x of XP (X=x) -1 0 1 2 0.05 0.25 0.55 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) = 0 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 60CR
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Transcribed Image Text:Let X be a random variable with the following probability distribution.
Value X of X
-1
Continue
0
1
2
P (X=x)
0.05
0.25
0.55
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) = 0
O
3
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