The histogram summarises the heights of 256 seedlings two weeks after they were planted.
\includegraphics[max width=\textwidth, alt={}, center]{08e3b0b0-2155-4b37-83e3-343c317ca10c-06_1242_1810_287_132}
Use linear interpolation to estimate the median height of the seedlings.
(4)
Chris decides to model the frequency density for these 256 seedlings by a curve with equation
$$y = k x ( 8 - x ) \quad 0 \leqslant x \leqslant 8$$
where \(k\) is a constant.