Data was collected for 40 randomly selected trees growing in the median strip of a busy freeway. The height of each tree (in inches) was recorded. Data was recorded to the nearest whole inch. The data is summarized in the histogram below.
2 4 6 8 height (in) 20 25 30 35 40 45 50 55 60 Frequency [Graphs generated by this script: setBorder(47,40,20,15); initPicture(15.5,60,0,8);axes(117.2,2,1,null,2); fill="blue"; stroke="black"; textabs([165,0],"height (in)","above");line([20,-0.16],[20,0.16]); text([20,0],"20","below");line([25,-0.16],[25,0.16]); text([25,0],"25","below");line([30,-0.16],[30,0.16]); text([30,0],"30","below");line([35,-0.16],[35,0.16]); text([35,0],"35","below");line([40,-0.16],[40,0.16]); text([40,0],"40","below");line([45,-0.16],[45,0.16]); text([45,0],"45","below");line([50,-0.16],[50,0.16]); text([50,0],"50","below");line([55,-0.16],[55,0.16]); text([55,0],"55","below");line([60,-0.16],[60,0.16]); text([60,0],"60","below");textabs([0,115],"Frequency","right",90);rect([20,0],[25,1]);rect([25,0],[30,3]);rect([30,0],[35,7]);rect([35,0],[40,8]);rect([40,0],[45,8]);rect([45,0],[50,7]);rect([50,0],[55,3]);rect([55,0],[60,3]);]
What is the maximum possible tree height for the data recorded for this histogram? Note: Each class contains its lower class boundary, but not its upper class boundary.
maximum =