Question 1204455
 

{{{P(85 < xbar < 125)}}}

transform above range to {{{N}}}({{{0}}},{{{1}}}) by computing {{{z}}}-scores:


{{{P( (85-105)/(20/sqrt(20)) < z < (125-105)/(20/sqrt(20))) }}}


{{{P( (85-105)/(20/sqrt(20)) < z < (125-105)/(20/sqrt(20)) )}}}


 {{{P(-4.47 < z < 4.47) =0.99999}}}