QMS 230 : CheatCheat page 2
28 Jan 2012
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Ex country a, b,c in war 86% arrive( a mean=[(rev-exp)*86%]+(-exp*lost(0. 14%)). Binomial=2 outcomes tor f(# of times, random variable,prob constant, independent) mean= np!q. Poisson- time,space(successes are random and independent) average of success p (lambda) X value normal distri- mean,med,mode (all in the midd symmetric), bell curved, single peak,(asymptotic get closer but never touch) total area=1 n=( ). Z value standard normal distri mn 0, sd 1 ), (0,1). Right +, left -. convert x to z z x. Inv n- x to p ncd^^ p to x inv n. Example: percentage of trucks can be expected to travel either below 32 or above 65. Inv at least the opp of ur % at most the % u have, hightest 8% then the area is 92%. % /// x e # the same %. X< left //// x > right ur tail is always left.
