Computer scientists have modeled the length of search queries on the web using a Poisson distribution. Suppose
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(a) Find the probability function of X.
(b) What is the probability of obtaining search queries longer than 10 words?
(c) Arampatzis and Kamps (2008) observe that many data sets contain very large queries that are not predicted by a Poisson model, such as queries of 10 words or more. They propose a restricted Poisson model for short queries, for instance queries of six words or less. Find P(Y = k|1 ¤ Y ¤ 6) for k = 0, . . . , 6.
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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