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Unformatted text preview: Therefore, we can write: But now, the P(X 1 + X 2 <=10) is distributed as a Binomial(N=14,p=.6), the cumulative probability of 10 heads or less in the first 14 flips. This is because we are told that the 15 th flip is not a head and can therefore have at most 10 heads in the first 14 flips. Also, the P(X 1 + X 2 <=9) is distributed similarly as a Binomial(N=14,p=.6) and we are looking for the cumulative probability of 9 heads in the first 14 flips. This is because we are told that the 15 th flip is a head and therefore can have at most 9 heads in the first 14 flips. = BINOMDIST(10,14,.6,true)(.4) + BINOMDIST(9,14,.6,true)(.6) And from the cumulative binomial tables we know: =(.876)(.4)+(.721)(.6)...
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This note was uploaded on 01/04/2010 for the course STATS 1100 taught by Professor Rodriguez during the Spring '08 term at Pittsburgh.
 Spring '08
 Rodriguez
 Statistics, Probability

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