Notes_on_Table_A2 - ST 371 Notes on Table A.2 Table A.2...

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ST 371: Notes on Table A.2 Table A.2 shows the cumulative probabilities for the Poisson distribution, or the values of the Poisson CDF: 0 ( ; ) ( ) ! y x y e F x P X x y As with Table A.1 (and any other statistical table you will encounter), the table does not list all possible values but provides a useful shortcut in many cases. Reading the Table: The table is on 2 pages: the first page lists values of μ that are less than or equal to 1, the second page lists value that are greater than 1 Within each page: o The column headings list various values for μ o The row headings list the possible values for x o The values within the table represent the cumulative probability P(X x) Ex: X ~ Poisson(0.4). Use Table A.2 to find P(X 2). Read this directly from the table: 0.992 [Plug the appropriate values into the formula and check that you get the same result.] Ex: X ~ Poisson(2). Use Table A.2 to find P(X > 5).
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