Consider a continuous review inventory system. Demand is normally distributed with an average of $28,000$ per month and a monthly standard deviation of $5100$ units. Lead time is $2$ weeks $($assume four weeks per month$)($round Z$-$values, standard deviations to two decimal places$).$ Consider a continuous review inventory system. Demand is normally distributed with an average of $28,000$ per month and a monthly standard deviation of $5100$ units. Lead time is $2$ weeks $($assume four weeks per month$)($round Z$-$values, standard deviations to two decimal places$).$ If the firm desires a$(\backslash ($ n $\backslash ))\backslash (90\backslash \%\backslash )$ cycle service level, it should hold units of safety stock $($round your response to the nearest integer$).$