Accountants use the term budget lapsing to describe the situation that occurs when unspent funds do not carry over from one budgeting period to the next. Due to budget lapsing, U.S. army hospitals tend to stockpile pharmaceuticals and other supplies toward the end of the fiscal year, leading to a spike in expenditures. This phenomenon was investigated in the Journal of Management Accounting Research (Vol. 19, 2007). Data on expenses per full time equivalent employees for a sample of 1,751 army hospitals yielded the following summary statistics:  = $6,563, m = $6,232, s = $2,484, QL = $5,309, and QU = $7,216.
a. Interpret, practically, the measures of relative standing.
b. Compute the interquartile range, IQR, for the data.
c. What proportion of the 1,751 army hospitals has expenses between $5,309 and $7,216?