IND ENG 161 Midterm: ieor161-sp2008-mt1-Lim-soln

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Let x be the time it takes for the bridge to collapse and y be the time it takes for. P r{x > 1 + y}p r{y = y}dy. P r{x > 1 + y } = z . P r{x > 1 + y } = p r{x > 1 + y |x > 1}p r{x > 1} = Indiana jones falls into the ravine if the collapse occurs after 1 hour and before he. P r{1 < x < 1 + y } = p r{x < 1 + y } p r{x < 1} = (1 p r{x > 1 + y }) (1 p r{x > 1}) = p r{x > 1} p r{x > 1 + y } Let x be the time until the next time gwenaelle makes the deposit, and y be the time until the parents make the next check.