Spring 2011 Homework 3 Solutions

Spring 2011 Homework 3 Solutions - Probability and...

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Probability and Statistics for Engineering Homework 3 Solutions Spring 2011 (1) is a discrete random variable with and . $ ! œ % .5 \\ (a) IÒ "!!  #\Ó œ "!!  #Ð$!Ñ œ %! (b) Var Var Var Ð"!!  #\Ñ œ Ð#\Ñ œ Ð#Ñ Ð\Ñ œ % † "' œ '% # (c) 5 "!!#\ œ' % œ ) È (d) At least (or %) of the counts are strictly between and . #% #& *' "! &! (2) 0ÐCÑ 12 3 4 *" ! !*" !* "* "* "* "* "* "* "* ††† Š‹ # 3 (a) > Ñœ ] ! * " ! * " ! * "* "* "* "* "*
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