A 24-Hour Coffee/donut Shop Makes Donuts Every Eight Hours Forecast the Demand for Glazed Donuts for the Three Shifts

Essay

A 24-hour coffee/donut shop makes donuts every eight hours. The manager must forecast donut demand so that the bakers have the fresh ingredients they need. Listed below is the actual number of glazed donuts (in dozens) sold in each of the preceding 13 eight-hour shifts. $$\begin{array} { c l c } \text { Date } & { \text { Shift } } & \text { Demand(dozens) } \\\hline \text { June 3 } & \text { Day } & 59 \\& \text { Evening } & 47 \\& \text { Night } & 35 \\\text { June 4 } & \text { Day } & 64 \\& \text { Evening } & 43 \\& \text { Night } & 39 \\\text { June 5 } & \text { Day } & 62 \\& \text { Evening } & 46 \\& \text { Night } & 42 \\\text { June 6 } & \text { Day } & 64 \\& \text { Evening } & 50 \\& \text { Night } & 40 \\\text { June 7 } & \text { Day } & 69\end{array}$$ Forecast the demand for glazed donuts for the three shifts of June 8 and the three shifts of June 9.