Question 1126828

Mean{{{mu = 98.2F}}}
Standard Deviation {{{delta= .62F }}}

(a)

{{{z(99.2) = (99.2-98.2)/0.62 = 1.6129}}}
{{{P(x > 00.2) = P(z> 1.6129) = 0.0534}}}


(b) 

Find the {{{z}}}-score that has a right tail of {{{5}}}%: 

{{{z =inv(0.95) = 1.645}}}

{{{x = z(delta) + mu = 1.645(.62) + 98.2 =99.2199=99.2}}}