The first seven customers of the day at a small
The first seven customers of the day at a small donut shop have checks of \$1.25, \$2.36, \$2.50, \$2.15, \$4.55, \$1.10, and \$0.95, respectively. Based on the number of customers served each day, the manager of the shop claims that the shop needs an average check of \$1.75 per person to stay profitable. Given her contention, has the shop made a profit in serving the first seven customers?
A computer and statistical software will be desirable and useful. However, any necessary calculations can also be done with the aid of a pocket calculator. For readers using statistical software, keep in mind the file-naming key— for example, the data for Exercise 3.57 will be in data file XR03057.
In exercise
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