Inorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively up the food chain (fruit

Inorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively up the food chain (fruit < vegetables="">< cereals="">< nuts="">< corpse).="" geochemical="" surveys="" take="" soil="" samples="" to="" determine="" phosphorous="" content="" (in="" ppm,="" parts="" per="" million).="" a="" high="" phosphorous="" content="" may="" or="" may="" not="" indicate="" an="" ancient="" burial="" site,="" food="" storage="" site,="" or="" even="" a="" garbage="" dump.="" independent="" random="" samples="" from="" two="" regions="" gave="" the="" following="" phosphorous="" measurements="" (in="" ppm).="" assume="" the="" distribution="" of="" phosphorous="" is="" mound-shaped="" and="" symmetric="" for="" these="" two="">