6 results.
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Question in Content created by Newcastle University
A weighted coin with given P(H),P(T) is tossed 3 times. Let X be the random variable which denotes the longest string of consecutive heads that occur during these tosses. Find the Probability Mass Function (PMF), expectation and variance of X.
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Question in Content created by Newcastle University
Given a probability mass function P(X=i) with outcomes i∈{0,1,2,…8}, find the expectation E and P(X>E).
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Question in Content created by Newcastle University
Three parts. A sample of size n is taken from N where k of the items are known to be defective and the task is to find the probability that more than m defectives are in the sample. First part is sampling with replacement (binomial), second is sampling without replacement, (hypergeometric) and the last part uses the Poisson approximation to the first part.
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Question in Content created by Newcastle University
Determine if the following describes a probability mass function.
P(X=x)=ax+bc,x∈S={n1,n2,n3,n4}⊂R.
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Question in Bill's workspace
Given a probability mass function P(X=i) with outcomes i∈{0,1,2,…8}, find the expectation E and P(X>E).
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Question in Bill's workspace
Determine if the following describes a probability mass function.
P(X=x)=ax+bc,x∈S={n1,n2,n3,n4}⊂R.