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Exponential Lifetimes.
A lifetime X(in years) of a particular device is modeled byan exponential distribution with unknown rate parameterθ. The lifetimes ofX1= 5,X2= 6,andX3= 4 are observed. Assume that an expert familiar with this type of devices suggested that θ has exponential distribution with mean 3
(a) For the prior suggested by the expert, find the posterior.
(b) What are the mean and variance of the posterior
Suppose that a sample of size 44 is drawn from a population with mean 88 and standard deviation 36 find the value of sigma, the standard deviation.
At a particular university is has been found that 20% of the students withdraw without completing the Business Statistics Course. Assume that 18 students have r
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Understand the role of the major EU institutions. Task 3a The Communities Act 1972, which gives legitimacy to the UK's membership of the EU is under threat. Mr Cameron, the UK Prime Minister, has promised a referendum by 2017 to allow the British ..
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You are given the task of building a pie chart that summarizes the five age categories of 582 individuals recorded in an SPSS sample file titled satisf.sav.
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