A hardware store counts the packages of screws, bolts and nails every Monday morning and then places an order to replenish its supply. The service level for the store is $98\%.$ Determine the order size for each item given the table below. Item Average Daily Demand Standard Deviation Quantity on Hand Lead Time $($days$)$ Screws $154910815$ Bolts $183122561$ Nails $137243902$ I had trouble finding information on how to do this one from the class notes so I had to do some outside research and this is what I was able to find$-$ Item Average Daily Demand Standard Deviation Quantity on Hand Lead Time $($days$)$ Protection period StDev during PP Safety stock Desired inventory Screws $1549108151231\mathrm{.}176964\mathrm{.}0301912\mathrm{.}03$ Bolts $183122561833\mathrm{.}9411369\mathrm{.}7071553\mathrm{.}707$ Nails $137243902972147\mathrm{.}871380\mathrm{.}87$ Stan dev during PP$=9*(12^0\mathrm{.}5)$ Stan dev during PP$=12*(8^0\mathrm{.}5)$ Stan dev during PP$=24*(9^0\mathrm{.}5)$ Z$=2\mathrm{.}053748909$ SS$=2\mathrm{.}053748909*$ SD during PP DI$=(154*12)+64\mathrm{.}030$ DI$=(183*8)+69\mathrm{.}707$ DI$=(137*9)+147\mathrm{.}87$ Order size: Desired inventory$-$ quantity on hand QScrews $=831\mathrm{.}03$ QBolts $=1297\mathrm{.}707$ QNails $=909\mathrm{.}87$