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Questions and Answers
What is the variance V(T) of the random variable T?
What is the variance V(T) of the random variable T?
- $V(T) = p^2(1-p)$
- $V(T) = p(1-p)$ (correct)
- $V(T) = np(1-p)$
- $V(T) = n(1-p)^2$
What is the expectation E(T) of the random variable T?
What is the expectation E(T) of the random variable T?
- $E(T) = n(1-p)$
- $E(T) = p$ (correct)
- $E(T) = 1-p$
- $E(T) = np$
What is the probability mass function P(X=1) for the Binomial random variable X?
What is the probability mass function P(X=1) for the Binomial random variable X?
- $P(X=1) = np(1-p)$
- $P(X=1) = p^2(1-p)$
- $P(X=1) = p(1-p)$ (correct)
- $P(X=1) = n(1-p)^2$
