how can I answer this please

10:57 4 II\" Q @' Take Quiz Exit D Question 6 1 pts Air samples were collected on eight successive days at two different sites. Parh'culate matter was measured in these samples (rig/m3) as an index of environmental quality. Note: Round your answer to two decimals. 40 matter Based the graph above, what is the probability that particularte matter is less than 30? o 81.25% 0 20.00% 0 None of Wm