A new printing machine is set or calibrated to print 25 copies per minute. On each of four days, the printer's output is measured five times. The data will be used to construct a process control chart to monitor the printing process. The results of the printing process are in the following table. 
To construct a range process control chart, what is the mean range?
Definitions:
MACRS 3-Year Class
A category used in the Modified Accelerated Cost Recovery System (MACRS) for tax depreciation, covering assets with a useful life of 3 years.
Net Advantage To Leasing
The financial benefit that results from leasing an asset instead of purchasing it, considering all costs and benefits.
Simple Interest Loan
A loan on which interest is calculated linearly over the life of the loan, based on the original principal amount without compounding.
Tax Bracket
A range of incomes taxed at a specific rate under a progressive tax system, where different portions of income are taxed at increasing rates.
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