$1.$ Sunrise Baking Company markets doughnuts through a chain of food stores. It has been experiencing over$-$ and

$1.$ Sunrise Baking Company markets doughnuts through a chain of food stores. It has been experiencing over$-$ and

under$-$production because of forecasting errors. The following data are its demand in dozens of doughnuts for the past

under$-$production because of forecasting errors. The following data are its demand in dozens of doughnuts for the past

four weeks. Doughnuts are made for the following day;

four weeks. Doughnuts are made for the following day;

for example, Sunday's doughnut production is for Monday's sales, Monday's production is for Tuesday's sales,

for example, Sunday's doughnut production is for Monday's sales, Monday's production is for Tuesday's sales,

and so forth. The bakery is closed Saturday, so Friday's production must satisfy demand for both Saturday and Sunday.

and so forth. The bakery is closed Saturday, so Friday's production must satisfy demand for both Saturday and Sunday.