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Chapter 2: Probability and statistics Flashcards | StudBud
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Chapter 2: Probability and statistics
Chapter 2: Probability and statistics
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Answers
1
Is this a probability density function (PDF)?
YES
NO
2
What is the sample space Ω of an experiment?
A set of all possible outcome
A random set of outcomes
A set of observations of interrest
3
Is this a probability density function (PDF)?
NO
YES
4
Let X be a continuous random variable. Which one is a cumulative distribution function (CDF)?
F(x)=df(X)/dx
F(x) = P(X>x)
F(x) = P(X≤x)
F(x) = 1-P(X>x)
5
Which on is a probability density function (PDF)?
f(X)=1-P(X>x)
f(x) = dF(X)/dx
f(x)=∫F(X)dx
6
What is an event?
An outcome of an experiment
A random variable
A subset of the sample space
7
Negative exponential distribution: which one is the correct probability density distribution?
D
A
B
C
8
What is correct here?
E(aX+b)=aE(X)
E(aX+b)=aE(X)+b
E(aX+b)=E(X)
E(aX+b)=aˆ2E(X)
