Question 535000
Approximate Solution:
Use continuity correction by subtracting 0.5 from 63

{{{P(X >= 62.5) = P(Z >= (62.5-0.8(75))/sqrt(75(0.8)(0.2)))}}}
                = {{{P(Z>=0.7217)}}}
                = {{{highlight(0.23524)}}}
Exact Solution(without replacement):
{{{sum( ( matrix( 2, 1, 8000,x ))( matrix( 2, 1, 2000,75-x ))/(( matrix( 2, 1, 10000,75 ))), x=63, 75 ) = highlight(0.238753) }}}