Question 1136475
{{{P(M > 255.2)}}} = 

first calculate {{{Z}}} score using given data

{{{Z = (255.2- 254.5)/(1.7/15^(0.5))= 0.7/(1.7/sqrt(15))=0.7/0.438938 = 1.59476}}}

{{{P(M>166.2) = P(Z>1.59476)}}}≈{{{0.0554}}}