lec12 - STATISTICS 13 STATISTICS Lecture 12 Oct 22 2010...

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STATISTICS 13 STATISTICS 13 STATISTICS 13 Lecture 12 Lecture 12 Oct. 22, 2010 Oct. 22, 2010
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Review Basic concepts of probability Counting: -mn rule -Permutations rule
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Counting: Combinations The number of ways you can choose r objects without regarding order from n distinct objects )! ( ! ! r n r n P P C r r n r n r
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Example: Candidates Suppose we want to form a two-member committee from five candidates Adam, Bette, Carl, David, Elle , how many different committees are possible? Answer: Note that unlike the “ranking” problem, here the order of choice/selection is not important --what’s the difference compared to the ranking problem?
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Example : Cards 5 cards on the table : How many different ways to select 3 cards to form a 3-card hand
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Cards (Cont.) 5 cards randomly drawn from a full deck of 52 without replacement to form a 5-card hand A flush is a hand of playing cards where all cards are of the same suit (spades, hearts, clubs, diamonds).
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This note was uploaded on 11/18/2010 for the course STA 13 taught by Professor Samaniego during the Spring '10 term at UC Davis.

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lec12 - STATISTICS 13 STATISTICS Lecture 12 Oct 22 2010...

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