Answer
$P(7)=0.149$
On about 149 of every 1000 days, there will be exactly 7 hits to a Web site between 7:30 p.m. and 7:35 p.m.
Work Step by Step
$P(7)=\frac{(1.4\times5)^{7}}{7!}\times e^{-1.4\times5}=\frac{(7)^{7}}{7\times6\times5\times4\times3\times2\times1}\times e^{-7}=0.149$
