12.4 The lognormal distribution E(ST)=S var(S)=Se(e°-1) Options, Futures, and Other Derivatives, Sth Edition C 2002 by John C. Hull12.4 Options, Futures, and Other Derivatives, 5th Edition © 2002 by John C. Hull The Lognormal Distribution E S S e S S e e T T T T T ( ) ( ) ( ) = = − 0 0 2 2 2 1 var m m s