18 results.
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Question in Bill's workspace
Given descriptions of 3 random variables, decide whether or not each is from a Poisson or Binomial distribution.
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Question in Bill's workspace
Choosing whether given random variables are qualitiative or quantitative.
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Question in Julie's workspace
X∼Binomial(n,p). Find P(X=a), P(X≤b), E[X],Var(X).
rebelmaths
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Question in Content created by Newcastle University
Given a discrete random variable X find the expectation of 1/X and eX.
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Question in Content created by Newcastle University
Arrivals given by exponential distribution, parameter θ and Y, sample mean on inter-arrival times. Find and calculate unbiased estimator for θ.
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Question in Content created by Newcastle University
Using a random sample from a population with given mean and variance, find the expectation and variance of three estimators of μ. Unbiased, efficient?
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Question in Content created by Newcastle University
The random variable X has a PDF which involves a parameter c. Find the value of c. Find the distribution function FX(x) and P(a<X<b).
Also find the expectation E[X]=∫∞−∞xfX(x)dx.
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Question in Content created by Newcastle University
Given three linear combinations of four i.i.d. variables, find the expectation and variance of these estimators of the mean μ. Which are unbiased and efficient?
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Question in Content created by Newcastle University
Normal distribution X∼N(μ,σ2) given. Find P(a<X<b). Find expectation, variance, P(c<¯X<d) for sample mean ¯X.
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Question in Content created by Newcastle University
The random variable X has a PDF which involves a parameter k. Find the value of k. Find the distribution function FX(x) and P(X<a).
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Question in Content created by Newcastle University
X∼Binomial(n,p). Find P(X=a), P(X≤b), E[X],Var(X).
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Question in Content created by Newcastle University
W∼Geometric(p). Find P(W=a), P(b≤W≤c), E[W], Var(W).
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Question in Content created by Newcastle University
Y∼Poisson(p). Find P(Y=a), P(Y>b), E[Y],Var(Y).
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Question in Content created by Newcastle University
X is a continuous uniform random variable defined on [a,b]. Find the PDF and CDF of X and find P(X≥c).
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Question in Content created by Newcastle University
Choosing whether given random variables are qualitiative or quantitative.
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Question in Ricardo's workspace
The random variable X has a PDF which involves a parameter c. Find the value of c. Find the distribution function FX(x) and P(a<X<b).
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Question in Bill's workspace
The random variable X has a PDF which involves a parameter c. Find the value of c. Find the distribution function FX(x) and P(a<X<b).
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Question in Bill's workspace
The random variable X has a PDF which involves a parameter k. Find the value of k. Find the distribution function FX(x) and P(X<a).