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Spark Industries uses a monthly periodic system to maintain the inventory of batteries it sells. Below is the sales data for the last 6 months.
Month
Jan
Feb
Mar
Apr
May
Jun
Units Sold
124
162
145
111
81
133
a) What is the company's average monthly demand for batteries?
b) Assume the standard deviation of demand is 28.1 batteries and Spark Industries wants to be in stock at least 95% of the time. What is the appropriate restocking level?
c) If there are currently 115 batteries on hand when the order is placed for July, how manybatteries should be ordered?
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