[填空题]
The number of phone calls per hou l:bx6yq5u. j+fs-dx.c l( xpzr that store man d :n1oshbopx pg;3k./agers receive during the day are showo; boxh 3.k1d: npp/sgn below.
$\begin{array}{llllllll}3 & 5 & 6 & 2 & 4 & 7 & 4 & 9\end{array} $
1. Find the median number of calls.
2. Write down the value of
(1). the mode;
(2). the upper quartile.
3. Find the probability that managers received no more than 5 calls in a randomly chosen hour.
