Let X be a random variable with the following probability distribution. Value x of X P (X =x) 0 0.15 10 0.25 20 0.15 30 0.30 40 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) 0 0.15 10 0.25 20 0.15 30 0.30 40 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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Question
Let X be a random variable with the following probability distribution.
| Value
x
X
|
P (X =x)
|
|---|---|
| 0 | 0.15 |
| 10 | 0.25 |
| 20 | 0.15 |
| 30 | 0.30 |
| 40 | 0.15 |
Complete the following. (If necessary, consult a list of formulas.)
|
|
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