Let S be a sample space and E and F be events associated with S. Suppose that Pr (Upper E )equals 0.6, Pr (Upper F )equals 0.2
and Pr (Upper E intersect Upper F )equals 0.1. Calculate the following probabilities. (a) Pr (E|F )(b) Pr (F|E )(c) Pr (E| Upper F prime )(d) Pr (Upper E prime | Upper F prime )
X=width of the lake y=length of the lake. we set out this system of equiations x*y=9/20 x=y/5 we solve by sustitution method (y/5)*y=9/20 y²/5=9/20 y²=(5*9)/ 20 y²=2.25 y=√2.25=1.5
x=y/5 x=1.5/5=0.3
Solution: width of the lake=0.3 miles lenght of the lake=1.5 miles